Election Outcome and Tax Compliance: The Role of Political Party Affiliation, Affect Balance, and Trust in Government. Nicholas C. Hunt, Govind S. Iyer, Peggy Jimenez. Applied Psychology, https://doi.org/10.1111/apps.12165
Abstract: The present study examines partisan reactions to Presidential election outcomes. Our model investigates the interactive role of political party affiliation on the relationship between identification with the winning party and affect balance. We subsequently examine how tax compliance intentions are influenced by this moderation relationship through affect balance and trust in government. We conducted a quasi‐experiment one week prior to the first mass 2016 presidential primary, where 12 of the 50 U.S. states voted to decide which candidates would represent the republican and democratic parties in the 2016 U.S. Presidential election. Our sample consisted of 205 Republicans and Democrats. We manipulated press releases showing various presidential candidates winning the presidency to examine how matches / mismatches between partisans’ political party affiliation and the party winning the election influence citizens’ overall feelings, beliefs, and intentions. We find election outcomes generate significant overall positive or negative feelings (i.e. affect balance) among partisans, which influences beliefs about trust in government, and subsequently their tax compliance intentions. Political party moderates the relationship between election outcomes and affect balance in such a way that democrats experience greater overall positive affect balance when their party wins the election compared to republicans.
Tuesday, August 21, 2018
For girls, sought-after schools reduce teen motherhood, increase educational attainment, increase earnings, & improve health; for boys, the results are mixed
Do Parents Know Best? The Short and Long-Run Effects of Attending The Schools that Parents Prefer. Diether W. Beuermann, C. Kirabo Jackson. NBER Working Paper No. 24920. www.nber.org/papers/w24920
Abstract: Recent studies document that, in many cases, sought after schools do not improve student test scores. Three explanations are that (i) existing studies identify local average treatment effects that do not generalize to the average student, (ii) parents cannot discern schools’ causal impacts, and (iii) parents value schools that improve outcomes not well measured by test scores. To shed light on this, we employ administrative and survey data from Barbados. Using discrete choice models, we document that most parents have strong preferences for the same schools. Using a regression-discontinuity design, we estimate the causal impact of attending a preferred school on a broad array of outcomes. As found in other settings, preferred schools have better peers, but do not improve short-run test scores. We implement a new statistical test and find that this null effect is not due to school impacts being different for marginal students than for the average student. Looking at longer-run outcomes, for girls, preferred schools reduce teen motherhood, increase educational attainment, increase earnings, and improve health. In contrast, for boys, the results are mixed. The pattern for girls is consistent with parents valuing school impacts on outcomes not well measured by test scores, while the pattern for boys is consistent with parents being unable to identify schools’ causal impacts. Our results indicate that impacts on test scores may be an incomplete measure of school quality.
Abstract: Recent studies document that, in many cases, sought after schools do not improve student test scores. Three explanations are that (i) existing studies identify local average treatment effects that do not generalize to the average student, (ii) parents cannot discern schools’ causal impacts, and (iii) parents value schools that improve outcomes not well measured by test scores. To shed light on this, we employ administrative and survey data from Barbados. Using discrete choice models, we document that most parents have strong preferences for the same schools. Using a regression-discontinuity design, we estimate the causal impact of attending a preferred school on a broad array of outcomes. As found in other settings, preferred schools have better peers, but do not improve short-run test scores. We implement a new statistical test and find that this null effect is not due to school impacts being different for marginal students than for the average student. Looking at longer-run outcomes, for girls, preferred schools reduce teen motherhood, increase educational attainment, increase earnings, and improve health. In contrast, for boys, the results are mixed. The pattern for girls is consistent with parents valuing school impacts on outcomes not well measured by test scores, while the pattern for boys is consistent with parents being unable to identify schools’ causal impacts. Our results indicate that impacts on test scores may be an incomplete measure of school quality.
The idea of the media as immoral, government-controlled and manipulative is essentially rooted in populist attitudes rather than in left-wing or right-wing attitudes; these people are not only angry, but also more politically active and do more often express their opinion in the media
Johanna Schindler, Claudia Fortkord, Lone Posthumus, Magdalena Obermaier, Nayla, Fawzi, Carsten Reinemann, Where does media hostility lead from? On the connection between populist attitudes, media hostility, negative emotions and participation (title autamtically translated from: Woher kommt und wozu führt Medienfeindlichkeit? Zum Zusammenhang von populistischen Einstellungen, Medienfeindlichkeit, negativen Emotionen und Partizipation) in: M&K Medien & Kommunikationswissenschaft, Seite 283 - 301. M&K, Jahrgang 66 (2018), Heft 3, ISSN print: 1615-634X, ISSN online: 1615-634X, DOI: 10.5771/1615-634X-2018-3-283
Abstract: Sensing an increase in hate speech and physical aggression against journalists, we see a new level of hostility towards the media, and with it potentially far-reaching consequences for society in general. However, little is known so far about both the individual causes of media hostility and its influence on individual media-related emotions and behaviour. We set out to determine the influence of populist attitudes, i.e. the significance of the idea of a homogenous, ‘good’ people v an ‘evil’ elite on media hostility. Our study, moreover, examines the broader consequence of hostile attitudes towards the media. Drawing on data from an online survey with 1,102 participants, we show how the idea of the media as immoral, government-controlled and manipulative is essentially rooted in populist attitudes rather than in left-wing or right-wing attitudes. The effects of populist attitudes on the level of media hostility can be seen to be mediated partially by the level of the perceived representation of participants’ own interests in the media, and by the use of alternative media. People showing hostile attitudes towards the media are not only angry, but they are also more politically active and do more often express their opinion in the media.
Abstract: Sensing an increase in hate speech and physical aggression against journalists, we see a new level of hostility towards the media, and with it potentially far-reaching consequences for society in general. However, little is known so far about both the individual causes of media hostility and its influence on individual media-related emotions and behaviour. We set out to determine the influence of populist attitudes, i.e. the significance of the idea of a homogenous, ‘good’ people v an ‘evil’ elite on media hostility. Our study, moreover, examines the broader consequence of hostile attitudes towards the media. Drawing on data from an online survey with 1,102 participants, we show how the idea of the media as immoral, government-controlled and manipulative is essentially rooted in populist attitudes rather than in left-wing or right-wing attitudes. The effects of populist attitudes on the level of media hostility can be seen to be mediated partially by the level of the perceived representation of participants’ own interests in the media, and by the use of alternative media. People showing hostile attitudes towards the media are not only angry, but they are also more politically active and do more often express their opinion in the media.
Gender equality & sex differences in personality, & evidence from a large, multi-national sample: Bigger differences when gender equality is greater
Gender equality and sex differences in personality: evidence from a large, multi-national sample. Tim Kaiser, Univ of Salzburg. July 2018. DOI: 10.17605/OSF.IO/6NUHX
Aim: findings on sex differences in personality are robust and stable across countries. Previous studies have also shown that these differences are greater in countries with greater gender equality. However, earlier studies have shortcomings as they either (a) did not use valid indicators of gender equality and development, (b) only studied broad domains of personality, (c) did not address issues of measurement invariance. The aim of this study is to replicate previous findings on the correlation between gender equality and sex differences in a methodologically robust way. Method: a large, multinational (N = 926,383) dataset was used to examine sex differences in Big Five facet scores for 70 countries. Difference scores were aggregated to a multivariate effect size (Mahalanobis' D).
Results: effect sizes were large (average D = 1.96), but varied across countries. Countries' difference scores were related to an index of gender equality, revealing a positive weighted correlation of r = .335.
Conclusion: using multivariate effect sizes derived from latent scores with invariance constraints, the study of sex differences in personality becomes more robust und replicable. Sex differences in personality should not be interpreted as results of unequal treatment, but as indicator of successful gender equality policies.
Aim: findings on sex differences in personality are robust and stable across countries. Previous studies have also shown that these differences are greater in countries with greater gender equality. However, earlier studies have shortcomings as they either (a) did not use valid indicators of gender equality and development, (b) only studied broad domains of personality, (c) did not address issues of measurement invariance. The aim of this study is to replicate previous findings on the correlation between gender equality and sex differences in a methodologically robust way. Method: a large, multinational (N = 926,383) dataset was used to examine sex differences in Big Five facet scores for 70 countries. Difference scores were aggregated to a multivariate effect size (Mahalanobis' D).
Results: effect sizes were large (average D = 1.96), but varied across countries. Countries' difference scores were related to an index of gender equality, revealing a positive weighted correlation of r = .335.
Conclusion: using multivariate effect sizes derived from latent scores with invariance constraints, the study of sex differences in personality becomes more robust und replicable. Sex differences in personality should not be interpreted as results of unequal treatment, but as indicator of successful gender equality policies.
Many studies have revealed the existence of intimate partner violence among lesbian and gay couples, & its incidence is comparable to (Turell, 2000) or higher than that among heterosexual couples (Messinger, 2011; Kelley et al., 2012)
When Intimate Partner Violence Meets Same Sex Couples: A Review of Same Sex Intimate Partner Violence. Luca Rollè, Giulia Giardina, Angela M. Caldarera, Eva Gerino and Piera Brustia. Front. Psychol., August 21 2018. https://doi.org/10.3389/fpsyg.2018.01506
Abstract: Over the past few decades, the causes of and intervention for intimate partner violence (IPV) have been approached and studied. This paper presents a narrative review on IPV occurring in same sex couples, that is, same sex IPV (SSIPV). Despite the myth that IPV is exclusively an issue in heterosexual relationships, many studies have revealed the existence of IPV among lesbian and gay couples, and its incidence is comparable to (Turell, 2000) or higher than that among heterosexual couples (Messinger, 2011; Kelley et al., 2012). While similarities between heterosexual and lesbian, gay, and bisexual (LGB) IPV were found, unique features and dynamics were present in LGB IPV. Such features are mainly related to identification and treatment of SSIPV in the community and to the need of taking into consideration the role of sexual minority stressors. Our findings show there is a lack of studies that address LGB individuals involved in IPV; this is mostly due to the silence that has historically existed around violence in the LGB community, a silence built on fears and myths that have obstructed a public discussion on the phenomenon. We identified the main themes discussed in the published studies that we have reviewed here. The reviews lead us to the conclusion that it is essential to create a place where this subject can be freely discussed and approached, both by LGB and heterosexual people.
Abstract: Over the past few decades, the causes of and intervention for intimate partner violence (IPV) have been approached and studied. This paper presents a narrative review on IPV occurring in same sex couples, that is, same sex IPV (SSIPV). Despite the myth that IPV is exclusively an issue in heterosexual relationships, many studies have revealed the existence of IPV among lesbian and gay couples, and its incidence is comparable to (Turell, 2000) or higher than that among heterosexual couples (Messinger, 2011; Kelley et al., 2012). While similarities between heterosexual and lesbian, gay, and bisexual (LGB) IPV were found, unique features and dynamics were present in LGB IPV. Such features are mainly related to identification and treatment of SSIPV in the community and to the need of taking into consideration the role of sexual minority stressors. Our findings show there is a lack of studies that address LGB individuals involved in IPV; this is mostly due to the silence that has historically existed around violence in the LGB community, a silence built on fears and myths that have obstructed a public discussion on the phenomenon. We identified the main themes discussed in the published studies that we have reviewed here. The reviews lead us to the conclusion that it is essential to create a place where this subject can be freely discussed and approached, both by LGB and heterosexual people.
Thirsty participants in a dictator's game share water more often equally with powerless, anonymous others than they do money, even when they earned both types of rewards previously; so that altruistic behavior is more likely to occur when it comes to sharing primary rewards
How selfish is a thirsty man? A pilot study on comparing sharing behavior with primary and secondary rewards. Astrid Kause, Oliver Vitouch, Judith Glück. PLOS One, August 20, 2018, https://doi.org/10.1371/journal.pone.0201358
Abstract: Human social interactions in daily life involve sharing various types of rewards. Previous research evolving around issues of selfish versus altruistic behavior indicates that when individuals share rewards like money with powerless others, some are purely selfish while a substantial number shares evenly. It is, however, mostly unknown how they share primary rewards like water, compared to secondary rewards like money. We adopt the widely studied Dictator Game for comparing water to be divided among study participants with a monetary reward. We show that thirsty participants share water more often equally with powerless, anonymous others than they do money. This is the case even when they earned both types of rewards in a preceding task. Results indicate that altruistic behavior is more likely to occur when it comes to sharing primary rewards. The ecologically more valid scenario employed in this study provides initial evidence that the concept of a self-interested homo economicus might not apply to everyday social interactions involving rewards other than money.
Abstract: Human social interactions in daily life involve sharing various types of rewards. Previous research evolving around issues of selfish versus altruistic behavior indicates that when individuals share rewards like money with powerless others, some are purely selfish while a substantial number shares evenly. It is, however, mostly unknown how they share primary rewards like water, compared to secondary rewards like money. We adopt the widely studied Dictator Game for comparing water to be divided among study participants with a monetary reward. We show that thirsty participants share water more often equally with powerless, anonymous others than they do money. This is the case even when they earned both types of rewards in a preceding task. Results indicate that altruistic behavior is more likely to occur when it comes to sharing primary rewards. The ecologically more valid scenario employed in this study provides initial evidence that the concept of a self-interested homo economicus might not apply to everyday social interactions involving rewards other than money.
We analyzed people’s ratings of whiskies featured at different serial positions in the tastings; we found a recency effect: people gave their highest rating to whiskies in the last position, and voted the last whisky as their favorite more frequently
In the real world, people prefer their last whisky when tasting options in a long sequence. Adele Quigley-McBride et al. PLOS One, August 20, 2018, https://doi.org/10.1371/journal.pone.0202732
Abstract: When people in laboratory studies sample products in a sequence, they tend to prefer options presented first and last. To what extent do these primacy and recency effects carry over to real-world settings where numerous sources of information determine preferences? To investigate this question, we coded archival data from 136 actual whisky tastings each featuring seven whiskies. We analyzed people’s ratings of whiskies featured at different serial positions in the tastings. We found a recency effect: people gave their highest rating to whiskies in the last position, and voted the last whisky as their favorite more frequently. This recency effect persisted when we controlled for the counter explanation that whiskies with higher alcohol content tended to occupy later serial positions. The recency effect also persisted when we controlled for the age of the whiskies. Taken together, our findings suggest that the order of presentation matters in real-world settings, closely resembling what happens in laboratory settings with longer sequences of options.
Abstract: When people in laboratory studies sample products in a sequence, they tend to prefer options presented first and last. To what extent do these primacy and recency effects carry over to real-world settings where numerous sources of information determine preferences? To investigate this question, we coded archival data from 136 actual whisky tastings each featuring seven whiskies. We analyzed people’s ratings of whiskies featured at different serial positions in the tastings. We found a recency effect: people gave their highest rating to whiskies in the last position, and voted the last whisky as their favorite more frequently. This recency effect persisted when we controlled for the counter explanation that whiskies with higher alcohol content tended to occupy later serial positions. The recency effect also persisted when we controlled for the age of the whiskies. Taken together, our findings suggest that the order of presentation matters in real-world settings, closely resembling what happens in laboratory settings with longer sequences of options.
Monday, August 20, 2018
Plutarch already said it: Pay less attention to the social networks...
Speaking of the Twitter of his era, Plutarch said:
This doesn't mean he was consistent... But the comment is quite valid still, IMHO.
Plutarch, De curiositate, 520d-e. Available at http://www.perseus.tufts.edu/hopper/text?doc=Perseus%3Atext%3A2008.01.0290%3Astephpage%3D520d. Translation in
'Graffiti and the Literary Landscape in Roman Pompeii,' by Kristina Milnor. Oxford University Press, Jan 2014, page 273.
"τί γὰρ χαλεπόν ἐστιν ἐν ταῖς ὁδοῖς τὰς ἐπὶ τῶν τάφων ἐπιγραφὰς μὴ ἀναγιγνώσκειν, ἢ τί δυσχερὲς ἐν τοῖς περιπάτοις τὰ κατὰ τῶν τοίχων γράμματα (or ἐπιγράμματα) τῇ ὄψει παρατρέχειν, ὑποβάλλοντας αὑτοῖς ὅτι χρήσιμον οὐδὲν οὐδ᾽ ἐπιτερπὲς ἐν τούτοις γέγραπται: ἀλλ᾽ ‘ἐμνήσθη’ ὁ δεῖνα τοῦ δεῖνος ἐπ᾽ ἀγαθῷ καὶ ‘φίλων ἄριστος’ ὅδε τις, καὶ πολλὰ τοιαύτης γέμοντα φλυαρίας: ἃ δοκεῖ μὲν οὐ βλάπτειν ἀναγιγνωσκόμενα, βλάπτει δὲ λεληθότως τῷ μελέτην παρεμποιεῖν τοῦ ζητεῖν τὰ μὴ προσήκοντα;".
Approx: For what is difficult in not noticing the inscriptions on tombstones along the roadways, or what is vexatious about passing over with your eye as you wander about those writings in the walls, as we suggest to ourselves that there is nothing written in them which is either useful or pleasing -- only so-and-so 'remembers' so-and-so, and 'wishes him the best', and is 'the best of friends', and many things full of such ridiculousness? Giving attention to such things may not seem to hurt, but the harm comes from creating the desire to search out things which are not your business.
This doesn't mean he was consistent... But the comment is quite valid still, IMHO.
Plutarch, De curiositate, 520d-e. Available at http://www.perseus.tufts.edu/hopper/text?doc=Perseus%3Atext%3A2008.01.0290%3Astephpage%3D520d. Translation in
'Graffiti and the Literary Landscape in Roman Pompeii,' by Kristina Milnor. Oxford University Press, Jan 2014, page 273.
People think about the future more often than the past (30% compared to 13%), and prospective memory occupies our thoughts approximately 13–15% of the time, of which 61% were internally cued, rather than externally triggered
Hey buddy, why don’t we take it outside: An experience sampling study of prospective memory. Francis T. Anderson, Mark A. McDaniel. Memory & Cognition, https://link.springer.com/article/10.3758/s13421-018-0849-x
Abstract: Relatively little research has focused on how prospective memory (PM) operates outside of the laboratory, partially due to the methodological problems presented by naturalistic memory research in general and by the unique challenges of PM in particular. Experience sampling methods (ESM) offer a fruitful avenue for this type of research, as recent work from Gardner and Ascoli (Psychology and Aging, 30, 209-219, 2015) has shown. They found that people thought about PM around 15% of the time, and that future thinking was more common than past thinking. In two studies, we replicated our own findings and those reported by Gardner and Ascoli. To summarize, people think about the future more often than the past (30% compared to 13%), and PM occupies our thoughts approximately 13–15% of the time, supporting claims made by some researchers that our episodic memory systems are forward-looking (Klein in Journal of Applied Research in Memory and Cognition, 2, 222-234, 2013). Of those PM thoughts, participants reported that 61% were internally cued, rather than externally triggered. Through the use of multi-level modeling, we additionally found that PM thoughts were more likely when the respondant was alone than with people, and earlier in the day. Finally, we found that participants higher in neuroticism were more likely to report thinking of PM, and that this was driven entirely by the anxiety facet. Most generally, we hope to have demonstrated the value of ESM to help researchers investigate and understand naturalistic PM.
Abstract: Relatively little research has focused on how prospective memory (PM) operates outside of the laboratory, partially due to the methodological problems presented by naturalistic memory research in general and by the unique challenges of PM in particular. Experience sampling methods (ESM) offer a fruitful avenue for this type of research, as recent work from Gardner and Ascoli (Psychology and Aging, 30, 209-219, 2015) has shown. They found that people thought about PM around 15% of the time, and that future thinking was more common than past thinking. In two studies, we replicated our own findings and those reported by Gardner and Ascoli. To summarize, people think about the future more often than the past (30% compared to 13%), and PM occupies our thoughts approximately 13–15% of the time, supporting claims made by some researchers that our episodic memory systems are forward-looking (Klein in Journal of Applied Research in Memory and Cognition, 2, 222-234, 2013). Of those PM thoughts, participants reported that 61% were internally cued, rather than externally triggered. Through the use of multi-level modeling, we additionally found that PM thoughts were more likely when the respondant was alone than with people, and earlier in the day. Finally, we found that participants higher in neuroticism were more likely to report thinking of PM, and that this was driven entirely by the anxiety facet. Most generally, we hope to have demonstrated the value of ESM to help researchers investigate and understand naturalistic PM.
Accounting for the shared environment in cognitive abilities and academic achievement with measured socioecological context
Accounting for the shared environment in cognitive abilities and academic achievement with measured socioecological contexts. Laura E. Engelhardt, Jessica A. Church, K. Paige Harden, Elliot M. Tucker‐Drob. Developmental Science, https://doi.org/10.1111/desc.12699
Abstract: Behavioral and molecular genetic research has established that child cognitive ability and academic performance are substantially heritable, but genetic variation does not account for all of the stratification of cognitive and academic outcomes across families. Which specific contexts and experiences contribute to these shared environmental influences on cognitive ability and academic achievement? Using an ethnically and socioeconomically diverse sample of N = 1728 twins ages 7–20 from the Texas Twin Project, we identified specific measured family, school, and neighborhood socioecological contexts that statistically accounted for latent shared environmental variance in cognitive abilities and academic skills. Composite measures of parent socioeconomic status (SES), school demographic composition, and neighborhood SES accounted for moderate proportions of variation in IQ and achievement. Total variance explained by the multilevel contexts ranged from 15% to 22%. The influence of family SES on IQ and achievement overlapped substantially with the influence of school and neighborhood predictors. Together with race, the measured socioecological contexts explained 100% of shared environmental influences on IQ and approximately 79% of shared environmental influences on both verbal comprehension and reading ability. In contrast, nontrivial proportions of shared environmental variation in math performance were left unexplained. We highlight the potential utility of constructing “polyenvironmental risk scores” in an effort to better predict developmental outcomes and to quantify children's and adolescents’ interrelated networks of experiences. A video abstract of this article can be viewed at: https://youtu.be/77E_DctFsr0
Abstract: Behavioral and molecular genetic research has established that child cognitive ability and academic performance are substantially heritable, but genetic variation does not account for all of the stratification of cognitive and academic outcomes across families. Which specific contexts and experiences contribute to these shared environmental influences on cognitive ability and academic achievement? Using an ethnically and socioeconomically diverse sample of N = 1728 twins ages 7–20 from the Texas Twin Project, we identified specific measured family, school, and neighborhood socioecological contexts that statistically accounted for latent shared environmental variance in cognitive abilities and academic skills. Composite measures of parent socioeconomic status (SES), school demographic composition, and neighborhood SES accounted for moderate proportions of variation in IQ and achievement. Total variance explained by the multilevel contexts ranged from 15% to 22%. The influence of family SES on IQ and achievement overlapped substantially with the influence of school and neighborhood predictors. Together with race, the measured socioecological contexts explained 100% of shared environmental influences on IQ and approximately 79% of shared environmental influences on both verbal comprehension and reading ability. In contrast, nontrivial proportions of shared environmental variation in math performance were left unexplained. We highlight the potential utility of constructing “polyenvironmental risk scores” in an effort to better predict developmental outcomes and to quantify children's and adolescents’ interrelated networks of experiences. A video abstract of this article can be viewed at: https://youtu.be/77E_DctFsr0
Well-being benefits and costs of an extraverted behavior intervention conducted in everyday life: positive and negative affects, feelings of authenticity, and tiredness—more introverted participants had weaker positive affect increases
Jacques-Hamilton, Rowan, Jessie Sun, and Luke Smillie. 2018. “Costs and Benefits of Acting Extraverted: A Randomized Controlled Trial.” PsyArXiv. August 20. doi:10.31234/osf.io/8ze6w
Abstract: Evidence suggests that extraverted (i.e., bold, agentic) behavior increases positive affect (PA), and could be targeted in wellbeing interventions. However, this evidence is either causally ambiguous or has questionable ecological validity, and the potential costs of sustained extraverted behavior have received minimal attention. To address these limitations, we conducted the first randomized controlled trial (RCT) examining the wellbeing benefits and costs of an extraverted behavior intervention conducted in everyday life. Participants (n = 147) were randomly assigned to an “act-extraverted” intervention or a “sham” (active control) intervention for one week in everyday life. Additional data for a contact control condition were obtained from a previous study (n = 76). Wellbeing outcomes included PA and negative affect (NA), feelings of authenticity, and tiredness—assessed both in the moment and retrospectively. There was a positive overall effect of the acting extraverted intervention on PA and authenticity. However, wellbeing outcomes also depended on dispositional extraversion: more introverted participants had weaker PA increases, experienced increased NA and tiredness, and decreased feelings of authenticity. Implications for wellbeing interventions and personality theory are discussed.
Abstract: Evidence suggests that extraverted (i.e., bold, agentic) behavior increases positive affect (PA), and could be targeted in wellbeing interventions. However, this evidence is either causally ambiguous or has questionable ecological validity, and the potential costs of sustained extraverted behavior have received minimal attention. To address these limitations, we conducted the first randomized controlled trial (RCT) examining the wellbeing benefits and costs of an extraverted behavior intervention conducted in everyday life. Participants (n = 147) were randomly assigned to an “act-extraverted” intervention or a “sham” (active control) intervention for one week in everyday life. Additional data for a contact control condition were obtained from a previous study (n = 76). Wellbeing outcomes included PA and negative affect (NA), feelings of authenticity, and tiredness—assessed both in the moment and retrospectively. There was a positive overall effect of the acting extraverted intervention on PA and authenticity. However, wellbeing outcomes also depended on dispositional extraversion: more introverted participants had weaker PA increases, experienced increased NA and tiredness, and decreased feelings of authenticity. Implications for wellbeing interventions and personality theory are discussed.
Rolf Degen summarizing: The actual clientele for "green" and "ethical" products is far smaller than the share of people who advocate those, constituting what Timur Kuran calls "preference falsification."
Green consumption: Closing the intention‐behavior gap. Hung Vu Nguyen, Cuong Hung Nguyen, Thoa Thi Bao Hoang. Sustainable Development, https://doi.org/10.1002/sd.1875
Abstract: Green consumption has become an important academic and practical topic. However, a recurring theme in the literature has been the attitude‐behavior gap in green consumption. Taking the cognitive view in studying consumer behaviors, this study theoretically developed and tested two key moderators to the relationship between green consumption intention and behavior, namely green product availability and perceived consumer effectiveness. Under high levels of the moderators, the relationship between the intention and the behavior were hypothesized to be stronger. Our data sample of 416 consumers in two large cities in Vietnam provided support for the hypotheses. Our study results thus contribute to the green consumption literature by explaining the attitude‐behavior gap. Our study also contributes to the broader literature by explaining the inconsistency in consumer behavior. Implications and recommendations for further research are also discussed.
Abstract: Green consumption has become an important academic and practical topic. However, a recurring theme in the literature has been the attitude‐behavior gap in green consumption. Taking the cognitive view in studying consumer behaviors, this study theoretically developed and tested two key moderators to the relationship between green consumption intention and behavior, namely green product availability and perceived consumer effectiveness. Under high levels of the moderators, the relationship between the intention and the behavior were hypothesized to be stronger. Our data sample of 416 consumers in two large cities in Vietnam provided support for the hypotheses. Our study results thus contribute to the green consumption literature by explaining the attitude‐behavior gap. Our study also contributes to the broader literature by explaining the inconsistency in consumer behavior. Implications and recommendations for further research are also discussed.
People high in brooding rumination were also more likely to report thinking about a past experience when probed at random during the day; optimists were more likely to report more vivid and positive future-oriented, but not past-oriented thoughts
Thinking about the past and future in daily life: an experience sampling study of individual differences in mental time travel. Roger E. Beaty, Paul Seli, Daniel L. Schacter. Psychological Research, https://link.springer.com/article/10.1007/s00426-018-1075-7
Abstract: Remembering the past and imagining the future are hallmarks of mental time travel. We provide evidence that such experiences are influenced by individual differences in temporal and affective biases in cognitive style, particularly brooding rumination (a negative past-oriented bias) and optimism (a positive future-oriented bias). Participants completed a 7-day, cellphone-based experience-sampling study of temporal orientation and mental imagery. Multilevel models showed that individual differences in brooding rumination predicted less vivid and positive past- and future-oriented thoughts, even after controlling for depressed mood. People high in brooding rumination were also more likely to report thinking about a past experience when probed at random during the day. Conversely, optimists were more likely to report more vivid and positive future-oriented, but not past-oriented thoughts, although they did not report thinking more or less often about the past and future. The results suggest that temporal and affective biases in cognitive style influence how people think about the past and future in daily life.
Abstract: Remembering the past and imagining the future are hallmarks of mental time travel. We provide evidence that such experiences are influenced by individual differences in temporal and affective biases in cognitive style, particularly brooding rumination (a negative past-oriented bias) and optimism (a positive future-oriented bias). Participants completed a 7-day, cellphone-based experience-sampling study of temporal orientation and mental imagery. Multilevel models showed that individual differences in brooding rumination predicted less vivid and positive past- and future-oriented thoughts, even after controlling for depressed mood. People high in brooding rumination were also more likely to report thinking about a past experience when probed at random during the day. Conversely, optimists were more likely to report more vivid and positive future-oriented, but not past-oriented thoughts, although they did not report thinking more or less often about the past and future. The results suggest that temporal and affective biases in cognitive style influence how people think about the past and future in daily life.
Men sexually fantasized more frequently about sadistic, impersonal, pre/tactile courtship disorder, and bodily function themes, while women reported a greater use of masochistic fantasies; there was no sex difference regarding the use of romantic fantasies
Bartels, Ross, and Craig A. Harper. 2018. “An Exploration of the Factor Structure of Gray Et Al.’s Sexual Fantasy Questionnaire.” PsyArXiv. August 19. doi:10.31234/osf.io/wxj54
Abstract: The accurate assessment of sexual fantasy use is important for both research and forensic/clinical practice. Although a number of sexual fantasy questionnaires exist, they tend to be associated with high financial cost for researchers, outdated or ambiguous terminology, and/or embody ethical problems arising from overtly explicit items. One measure that does not contain these issues is Gray et al.’s (2003) Sexual Fantasy Questionnaire (SFQ). While the SFQ has recently gained some interest from researchers, it has not been thoroughly validated. Thus, in this study, we combined data from three online survey-based samples (N = 594) to examine the factor structure underpinning the SFQ. After conducting parallel and principal components analyses, a six-factor structure was settled upon. The resulting SFQ-revised contained 62-items, with the six factors reflecting the following fantasy themes: (1) masochistic, (2) sadistic, (3) romantic, (4) impersonal, (5) pre/tactile courtship disorder, and (6) bodily function. Data on how the six clusters differ across genders, sexual orientation, and relationship status are also provided. We also developed a short version of the SFQ-revised (37-items) for use when time or space are constrained. The theoretical and methodological significance of the revised SFQs are discussed, as well as recommendations for research and practice.
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[...] men sexually fantasized more frequently about sadistic, impersonal, pre/tactile courtship disorder, and bodily function themes, while women reported a greater use of masochistic fantasies. There was no sex difference regarding the use of romantic fantasies. In relation to sexual orientation, heterosexual participants sexually fantasized less frequently across all clusters or themes, compared to participants who identified as having a non-heterosexual sexual orientation. The only exception to this general trend was in relation to romantic fantasies, where there was no difference between heterosexual and non-heterosexual participants. Participants who were in a relationship at the time of data collection reported more frequent use of all fantasy clusters, with the exception of pre/tactile courtship disorder fantasies. Age was generally unrelated to any fantasy cluster (r’s < .21).
Abstract: The accurate assessment of sexual fantasy use is important for both research and forensic/clinical practice. Although a number of sexual fantasy questionnaires exist, they tend to be associated with high financial cost for researchers, outdated or ambiguous terminology, and/or embody ethical problems arising from overtly explicit items. One measure that does not contain these issues is Gray et al.’s (2003) Sexual Fantasy Questionnaire (SFQ). While the SFQ has recently gained some interest from researchers, it has not been thoroughly validated. Thus, in this study, we combined data from three online survey-based samples (N = 594) to examine the factor structure underpinning the SFQ. After conducting parallel and principal components analyses, a six-factor structure was settled upon. The resulting SFQ-revised contained 62-items, with the six factors reflecting the following fantasy themes: (1) masochistic, (2) sadistic, (3) romantic, (4) impersonal, (5) pre/tactile courtship disorder, and (6) bodily function. Data on how the six clusters differ across genders, sexual orientation, and relationship status are also provided. We also developed a short version of the SFQ-revised (37-items) for use when time or space are constrained. The theoretical and methodological significance of the revised SFQs are discussed, as well as recommendations for research and practice.
---
[...] men sexually fantasized more frequently about sadistic, impersonal, pre/tactile courtship disorder, and bodily function themes, while women reported a greater use of masochistic fantasies. There was no sex difference regarding the use of romantic fantasies. In relation to sexual orientation, heterosexual participants sexually fantasized less frequently across all clusters or themes, compared to participants who identified as having a non-heterosexual sexual orientation. The only exception to this general trend was in relation to romantic fantasies, where there was no difference between heterosexual and non-heterosexual participants. Participants who were in a relationship at the time of data collection reported more frequent use of all fantasy clusters, with the exception of pre/tactile courtship disorder fantasies. Age was generally unrelated to any fantasy cluster (r’s < .21).
Sunday, August 19, 2018
Umpteenth time the citizen is willingly robbed: Gov't utility makes less efficient panels, closes production line, retools premises & tries again with federal (Italian gov't) and confederal (EU Commision) money
In Shadow of Mt. Etna, Europe Makes a Last Stand for Solar. Stanley Reed and Keith Bradsher. The New York Times, Aug 18 2018, https://www.nytimes.com/2018/08/16/business/energy-environment/europe-italy-solar-energy-china.html
Many governmens do this, allowing themselves to support experiments with the citizen's money despite previous costly failures. Example this time in Italy, courtesy of the New York Times.
After shutting down a previous line that made panels a third less efficient than Chinese technology, they are at it again:
They speak of ENEL as if it were a utility company:
But these are ENEL owners, data from 2017, starting with the most important one (https://www.marketscreener.com/ENEL-70935/company/):
Name Equities %
Government of Italy 2,397,856,331 23.60%
The Vanguard Group, Inc. 204,756,632 2.01%
Norges Bank Investment Management 192,438,206 1.89%
BlackRock Fund Advisors 134,870,693 1.33%
Capital Research & Management Co (World Investors) 129,335,830 1.27%
BlackRock Investment Management (UK) Ltd. 110,581,006 1.09%
Capital Research & Management Co (Global Invest's) 102,060,459 1.00%
Franklin Mutual Advisers LLC 87,716,590 0.86%
JPMorgan Asset Management (UK) Ltd 80,839,145 0.80%
BlackRock Advisors (UK) Ltd. 62,558,753 0.62%
And now, again after about two decades trying and losing money, they are at it again:
How is this new production line getting the money? Are they competing with others, or are they getting their backs covered? See the guarantors:
This is the real reason for the governments support (with both federal and national level backers): Government assistance to regions, according to quotas:
There is nothing that can be done, since everybody has stakes in this kind of fraud. The citizen expects to take some of the spoils of the Treasury to give employment or at least subsidies to their children. And the politician gives his closest ones good jobs and a future.
Many governmens do this, allowing themselves to support experiments with the citizen's money despite previous costly failures. Example this time in Italy, courtesy of the New York Times.
After shutting down a previous line that made panels a third less efficient than Chinese technology, they are at it again:
CATANIA, Italy — The enormous glass building on the outskirts of this Sicilian city had been intended for making silicon wafers for flash memory chips. That plan got crushed by the global financial crisis.
Built in the early 2000s, it was overhauled in 2011 to churn out conventional panels used to build solar farms in Greece, Italy and South Africa. Once again, the factory struggled, this time losing ground to Chinese rivals that trumped it on price, as well as on technology.
They speak of ENEL as if it were a utility company:
Now, the facility’s owner, the Italian utility Enel, is changing tack again, betting on an advanced, commercially untested system for solar panels. This time, Enel hopes it finally has what it takes to challenge the industry behemoth — China.
But these are ENEL owners, data from 2017, starting with the most important one (https://www.marketscreener.com/ENEL-70935/company/):
Name Equities %
Government of Italy 2,397,856,331 23.60%
The Vanguard Group, Inc. 204,756,632 2.01%
Norges Bank Investment Management 192,438,206 1.89%
BlackRock Fund Advisors 134,870,693 1.33%
Capital Research & Management Co (World Investors) 129,335,830 1.27%
BlackRock Investment Management (UK) Ltd. 110,581,006 1.09%
Capital Research & Management Co (Global Invest's) 102,060,459 1.00%
Franklin Mutual Advisers LLC 87,716,590 0.86%
JPMorgan Asset Management (UK) Ltd 80,839,145 0.80%
BlackRock Advisors (UK) Ltd. 62,558,753 0.62%
And now, again after about two decades trying and losing money, they are at it again:
Enel believes that by focusing on an esoteric technology, it can afford to make panels here and avoid a price war. It hopes that its products, which can capture more energy from the sun’s rays than those of rivals, will offer greater value than cheaper models.
China is a tough challenger to beat. The country’s manufacturers have established giant factories, complex supply chains and global networks of suppliers. Having driven prices relentlessly lower, they, too, are now innovating, rivaling the world’s best in efficiency while scoring breakthroughs like building enormous floating solar farms or experimenting with installing solar panels in roads.
“Making solar power is not rocket science,” said Jenny Chase, a solar analyst at Bloomberg New Energy Finance, a research firm. “It is something you can do more cheaply when you have a big manufacturing base.”
[...]
In the latest such instance, as prices for solar power dropped sharply in recent years, the Italian utility came to a difficult conclusion: Its panels were already a third less efficient than those developed by Chinese manufacturers, and that gap is likely to widen over time.
“We said to ourselves: ‘We have bought the company. What do we do?’” said Antonello Irace, the head of the Catania unit, known as EGP 3Sun.
Mr. Irace eventually admitted defeat, shutting down the old production line last fall to retool the plant.
How is this new production line getting the money? Are they competing with others, or are they getting their backs covered? See the guarantors:
Enel is spending 87.5 million euros, or about $101 million, on new equipment and other changes, of which the Italian government is chipping in €14 million. The European Union is adding an extra €9 million to help cover operating expenses.Deep, intelligent intervention of a patriotic man, who fights for the greening of the economy, the planet's health and for all of humanity:
The Catania plant is likely to begin producing state-of-the-art solar panels next year, after trial runs in the coming months. It is embracing heterojunction technology, a system that has not been commercially proven. It involves adding a new, microscopic layer of silicon to solar cells, increasing their ability to gather sunlight and convert it into electricity.
These new panels will also be “bifacial,” meaning they will be able to gather light not only directly from the sun but also from stray beams that bounce off the ground.
Enel expects that panels made in the first year will be able to convert around 20 percent of sunlight to energy, which is toward the higher end of industry averages. It hopes to reach 25 percent in five years — which would help offset their higher cost.
That could make a big difference in winning projects. Bids on giant solar farms worth hundreds of millions of dollars are increasingly price sensitive, and costs are falling fast.
Mr. Irace said the new designs were especially promising for the sunny Middle East, where countries like Saudi Arabia and the United Arab Emirates have been ramping up solar programs.
Those efforts may amount to little, however, if Enel cannot produce its panels on a larger scale, sufficient to compete with rivals from China.
For now, Enel aims to produce around 500,000 panels a year, a drop in the bucket compared with its Chinese competitors. In effect, it is “shipping cartons and crates,” said Chris Buckland, head of technology at Lightsource BP, a British solar developer. By contrast, Chinese companies are filling “40-foot containers.”
The Italian utility’s difficulties ramping up output point to the vastly changing fortunes of the solar sectors in Europe and China.
[...]
That is the route Enel is trying to follow in Sicily. Although heterojunction technology is not patented, Enel hopes that refinements it has made to the manufacturing process will give it a head start on rivals.
“We have to manufacture modern, advanced, innovative products in their initial life cycle,” said Antonio Cammisecra, the chief executive of Enel Green Power.
This is the real reason for the governments support (with both federal and national level backers): Government assistance to regions, according to quotas:
If Enel succeeds, it will give a crucial lift to a region that has lost as much as a quarter of its industrial capacity since the financial crisis, said Armando Castronuovo, an expert on the area at the University of Catania. The city’s economic backbone — agribusiness and tourism — has held up relatively well, but youth unemployment remains around 40 percent.
Enel has drawn on the local university to find the advanced science graduates necessary to ensure it can continue to come up with cutting-edge technology. In all, it has preserved some 300 jobs at the plant and a nearby research center.
There is nothing that can be done, since everybody has stakes in this kind of fraud. The citizen expects to take some of the spoils of the Treasury to give employment or at least subsidies to their children. And the politician gives his closest ones good jobs and a future.
Enhancing CCTV: Pixel averages improve face identification from poor‐quality images
Enhancing CCTV: Averages improve face identification from poor‐quality images. Kay L. Ritchie et al. Applied Cognitive Psychology, https://doi.org/10.1002/acp.3449
Summary: Low‐quality images are problematic for face identification, for example, when the police identify faces from CCTV images. Here, we test whether face averages, comprising multiple poor‐quality images, can improve both human and computer recognition. We created averages from multiple pixelated or nonpixelated images and compared accuracy using these images and exemplars. To provide a broad assessment of the potential benefits of this method, we tested human observers (n = 88; Experiment 1), and also computer recognition, using a smartphone application (Experiment 2) and a commercial one‐to‐many face recognition system used in forensic settings (Experiment 3). The third experiment used large image databases of 900 ambient images and 7,980 passport images. In all three experiments, we found a substantial increase in performance by averaging multiple pixelated images of a person's face. These results have implications for forensic settings in which faces are identified from poor‐quality images, such as CCTV.
Summary: Low‐quality images are problematic for face identification, for example, when the police identify faces from CCTV images. Here, we test whether face averages, comprising multiple poor‐quality images, can improve both human and computer recognition. We created averages from multiple pixelated or nonpixelated images and compared accuracy using these images and exemplars. To provide a broad assessment of the potential benefits of this method, we tested human observers (n = 88; Experiment 1), and also computer recognition, using a smartphone application (Experiment 2) and a commercial one‐to‐many face recognition system used in forensic settings (Experiment 3). The third experiment used large image databases of 900 ambient images and 7,980 passport images. In all three experiments, we found a substantial increase in performance by averaging multiple pixelated images of a person's face. These results have implications for forensic settings in which faces are identified from poor‐quality images, such as CCTV.
Human testes are relatively small for body size: Copulatory and Postcopulatory Sexual Selection in Primates
Copulatory and Postcopulatory Sexual Selection in Primates. A F Dixson. Folia Primatologica 2018;89:258–286. https://doi.org/10.1159/000488105
Abstract: Many aspects of primate reproductive anatomy and physiology have been influenced by copulatory and postcopulatory sexual selection, especially so in taxa where multiple-partner matings by females result in the sperm of rival males competing for access to a given set of ova (sperm competition). However, the female reproductive system also exerts profound effects upon sperm survival, storage and transport, raising the possibility that female traits influence male reproductive success (via cryptic female choice). Current knowledge of sperm competition and cryptic choice in primates and other mammals is reviewed here. The relevance of these comparative studies to our understanding of human reproduction and evolution is discussed.
Abstract: Many aspects of primate reproductive anatomy and physiology have been influenced by copulatory and postcopulatory sexual selection, especially so in taxa where multiple-partner matings by females result in the sperm of rival males competing for access to a given set of ova (sperm competition). However, the female reproductive system also exerts profound effects upon sperm survival, storage and transport, raising the possibility that female traits influence male reproductive success (via cryptic female choice). Current knowledge of sperm competition and cryptic choice in primates and other mammals is reviewed here. The relevance of these comparative studies to our understanding of human reproduction and evolution is discussed.
White-collar offenders, including those holding high-trust organizational positions, engaged in regulatory income tax violations and regulatory traffic violations at significantly higher levels than did controls
Rule-violating behaviour in white-collar offenders: A control group comparison. Joost HR van Onna, Victor R van der Geest, Adriaan JM Denkers. European Journal of Criminology, https://doi.org/10.1177/1477370818794114
Abstract: This study aims at enhancing our understanding of criminogenic individual-level factors in white-collar crime, that is, fraudulent acts carried out in an occupational capacity or setting. We do so by examining consistency of rule-violating behaviour across different settings outside the occupational context in a sample of white-collar offenders (n = 637) and comparing it with a matched control group (n = 1809), controlling for socio-demographic, crime and organizational characteristics. Results show that white-collar offenders, including those holding high-trust organizational positions, engaged in regulatory income tax violations and regulatory traffic violations at significantly higher levels than did controls. This study concludes that individual characteristics are likely to underlie the identified cross-contextual consistency in rule-violating behaviour and debates the relevance of the findings for white-collar crime in organizations.
Keywords: control group, high-trust position, individual differences, rule violation, white-collar offenders
Abstract: This study aims at enhancing our understanding of criminogenic individual-level factors in white-collar crime, that is, fraudulent acts carried out in an occupational capacity or setting. We do so by examining consistency of rule-violating behaviour across different settings outside the occupational context in a sample of white-collar offenders (n = 637) and comparing it with a matched control group (n = 1809), controlling for socio-demographic, crime and organizational characteristics. Results show that white-collar offenders, including those holding high-trust organizational positions, engaged in regulatory income tax violations and regulatory traffic violations at significantly higher levels than did controls. This study concludes that individual characteristics are likely to underlie the identified cross-contextual consistency in rule-violating behaviour and debates the relevance of the findings for white-collar crime in organizations.
Keywords: control group, high-trust position, individual differences, rule violation, white-collar offenders
Antisocial personality constructs: Tactical and strategic image cultivation and defense behavior
Profiles and profile comparisons between Dark Triad constructs on self‐presentation tactic usage and tactic beliefs. William Hart, Gregory K. Tortoriello, Kyle Richardson, Christopher J. Breeden. Journal of Personality, https://doi.org/10.1111/jopy.12411
Abstract
Objective: The present research profiled antisocial personality constructs in relation to tactical self‐presentation behaviors and various beliefs associated with such tactical behavior.
Method: An MTurk sample (N = 524; Mage = 37.89; 61% female) completed indices of the Dark Triad (DT; narcissism, Machiavellianism, psychopathy) and self‐reported their use of various self‐presentation tactics, their beliefs about the subjective logic for executing the tactics (which encompassed ratings of the tactics’ utility, ease of execution, and normativity), and the potential for each tactic to arouse self‐recrimination.
Results: Results revealed high convergence between the DT constructs on a relatively malignant approach to self‐presentation. DT constructs related to enhanced usage, enhanced subjective logic, and reduced self‐recrimination ratings for all the tactics, except pro‐social ones (exemplification and apologizing). Nonetheless, results also revealed some notable anticipated instances of nonconvergences between the DT constructs and tactic usage.
Conclusions: The findings highlight that DT constructs function rather similarly at the level of self‐presentation and suggest value in considering the DT constructs as indicative of strategic, subjectively logical image cultivation and defense behavior.
Abstract
Objective: The present research profiled antisocial personality constructs in relation to tactical self‐presentation behaviors and various beliefs associated with such tactical behavior.
Method: An MTurk sample (N = 524; Mage = 37.89; 61% female) completed indices of the Dark Triad (DT; narcissism, Machiavellianism, psychopathy) and self‐reported their use of various self‐presentation tactics, their beliefs about the subjective logic for executing the tactics (which encompassed ratings of the tactics’ utility, ease of execution, and normativity), and the potential for each tactic to arouse self‐recrimination.
Results: Results revealed high convergence between the DT constructs on a relatively malignant approach to self‐presentation. DT constructs related to enhanced usage, enhanced subjective logic, and reduced self‐recrimination ratings for all the tactics, except pro‐social ones (exemplification and apologizing). Nonetheless, results also revealed some notable anticipated instances of nonconvergences between the DT constructs and tactic usage.
Conclusions: The findings highlight that DT constructs function rather similarly at the level of self‐presentation and suggest value in considering the DT constructs as indicative of strategic, subjectively logical image cultivation and defense behavior.
Memory for everyday driving: Large number of “false alarm” answers suggested recall was coloured by what usually happens on familiar roads
Memory for everyday driving. Samuel G. Charlton, Nicola J. Starkey. Transportation Research Part F: Traffic Psychology and Behaviour, Volume 57, August 2018, Pages 129-138. https://doi.org/10.1016/j.trf.2017.06.007
Highlights
• Drivers completed 14 km circuit of familiar roads on road or in video-based simulator.
• Participants’ free recall of drive frequently included bad behaviour of other drivers.
• No observed differences between on-road and simulated drives in accuracy of cued recall.
• Large number of “false alarm” answers suggested recall was coloured by what usually happens on familiar roads.
Abstract: As drivers, we often have the sense that we can recall very little about our everyday trips, particularly on familiar roads when nothing untoward occurs. The failure to recall incidental events from a routine drive is not surprising if these drives are performed at a fairly automatic or preconscious level of engagement. Some researchers have suggested that danger, difficulty, and consequentiality are what make events and actions memorable for drivers. To investigate what drivers remember from a routine trip, we asked participants (n = 75) to drive familiar local roads on a 15 km urban route either on-road in an instrumented car, or in the University of Waikato driving simulator (with and without a passenger). At ten predetermined locations on the drive participants were asked to provide ratings of perceived risk, difficulty and anxiety. At the end of the drive, participants were asked a free recall question about what they remembered from the drive, followed by cued recall questions about six of the locations from the drive prompted by photographs. In general, participants recalled very similar things from the drive, notably what they saw as the poor behaviour of other drivers. The participants’ recall accuracy was rather poor, with memory for whether they had stopped at a particular location having the highest accuracy. Memory of whether there were vehicles ahead and whether they had stopped had a high number of recall false alarms, adding to the suggestion that participants remembered the locations and what usually happens there rather than detailed recollections of a particular occasion. There were no observed relationships between recall accuracy and perceptions of driving risk, difficulty, or anxiety. The results indicated that memories of everyday driving are combinations of examples of bad behaviour of other road users and our recollections of what typically happens at familiar locations.
Highlights
• Drivers completed 14 km circuit of familiar roads on road or in video-based simulator.
• Participants’ free recall of drive frequently included bad behaviour of other drivers.
• No observed differences between on-road and simulated drives in accuracy of cued recall.
• Large number of “false alarm” answers suggested recall was coloured by what usually happens on familiar roads.
Abstract: As drivers, we often have the sense that we can recall very little about our everyday trips, particularly on familiar roads when nothing untoward occurs. The failure to recall incidental events from a routine drive is not surprising if these drives are performed at a fairly automatic or preconscious level of engagement. Some researchers have suggested that danger, difficulty, and consequentiality are what make events and actions memorable for drivers. To investigate what drivers remember from a routine trip, we asked participants (n = 75) to drive familiar local roads on a 15 km urban route either on-road in an instrumented car, or in the University of Waikato driving simulator (with and without a passenger). At ten predetermined locations on the drive participants were asked to provide ratings of perceived risk, difficulty and anxiety. At the end of the drive, participants were asked a free recall question about what they remembered from the drive, followed by cued recall questions about six of the locations from the drive prompted by photographs. In general, participants recalled very similar things from the drive, notably what they saw as the poor behaviour of other drivers. The participants’ recall accuracy was rather poor, with memory for whether they had stopped at a particular location having the highest accuracy. Memory of whether there were vehicles ahead and whether they had stopped had a high number of recall false alarms, adding to the suggestion that participants remembered the locations and what usually happens there rather than detailed recollections of a particular occasion. There were no observed relationships between recall accuracy and perceptions of driving risk, difficulty, or anxiety. The results indicated that memories of everyday driving are combinations of examples of bad behaviour of other road users and our recollections of what typically happens at familiar locations.
Saturday, August 18, 2018
Astonishing numbers of people remain blissfully unaware of fundamental truths about their own bodies
Where ignorance is bliss, ‘tis folly to be wise. Chris Potter, ENT & Audiology News, Vol 27, no 3, July/Aug 2018.
https://www.entandaudiologynews.com/media/11976/entja18-potterssoapbox.pdf
I’m not sure about you, but I seem to exist in a sea of incompetence and ignorance, constantly surrounded by amateurish chumps and feckless underachievers. Now, a lesser man may be daunted by this outlook, but I see it as my purpose in life to personally confront these issues and tirelessly educate sufferers as to their areas of deficiency. Despite my selfless dedication, a surprising number of colleagues fail to appreciate my efforts. Indeed, some even appear rather agitated by my forensic dissection of their personal inadequacies and bold exhortations to self-improvement. Rather than being discouraged by this attitude, I stand firm in the knowledge that the weight of scientific evidence lies (for once in my clinical life) firmly behind me.
[...]
However, astonishing numbers of people remain blissfully unaware of fundamental truths about their own bodies. Around 60% of men with a fracture injury of the hand or foot will have completely forgotten about it to the extent of complete denial within 15 years [1]. Somewhat surprisingly, 36% of circumcised men attending an STD clinic were quite certain they were uncircumcised [2]. Just read that sentence again and remember those 36% are free to vote and bear arms.
https://www.entandaudiologynews.com/media/11976/entja18-potterssoapbox.pdf
I’m not sure about you, but I seem to exist in a sea of incompetence and ignorance, constantly surrounded by amateurish chumps and feckless underachievers. Now, a lesser man may be daunted by this outlook, but I see it as my purpose in life to personally confront these issues and tirelessly educate sufferers as to their areas of deficiency. Despite my selfless dedication, a surprising number of colleagues fail to appreciate my efforts. Indeed, some even appear rather agitated by my forensic dissection of their personal inadequacies and bold exhortations to self-improvement. Rather than being discouraged by this attitude, I stand firm in the knowledge that the weight of scientific evidence lies (for once in my clinical life) firmly behind me.
[...]
However, astonishing numbers of people remain blissfully unaware of fundamental truths about their own bodies. Around 60% of men with a fracture injury of the hand or foot will have completely forgotten about it to the extent of complete denial within 15 years [1]. Somewhat surprisingly, 36% of circumcised men attending an STD clinic were quite certain they were uncircumcised [2]. Just read that sentence again and remember those 36% are free to vote and bear arms.
Spoilers Affect the Enjoyment of Television Episodes but Not Short Stories
Spoilers Affect the Enjoyment of Television Episodes but Not Short Stories. Thomas A. Daniel, Jeffrey S. Katz. Psychological Reports, https://doi.org/10.1177/0033294118793971
Abstract: While spoilers are culturally regarded as something that detracts enjoyment from a narrative, research has presented a complicated picture. When Leavitt and Christenfeld presented participants plot-crucial information to individuals before reading a short story, the story was subsequently enjoyed as much as, or more than, unspoiled stories. Other research shows that these findings may be driven by an interaction of individual differences, such as need for cognition, rather than a broad spoiling effect. In Experiment 1, we tested if reported enjoyment of a narrative decreased even when participants were alerted to the presence of a plot spoiler, to extend previous findings for short stories while adding a condition informing participants beforehand that their short stories was being spoiled. Experiment 2 extended this methodology to full-length episodes of television. Our results were different from previously reported positive effects of spoilers and show that spoilers, under certain circumstances, have a negative effect on enjoyment for television but not short stories.
Keywords: Creativity, decision-making, thinking styles, fan behavior, language proficiency
Abstract: While spoilers are culturally regarded as something that detracts enjoyment from a narrative, research has presented a complicated picture. When Leavitt and Christenfeld presented participants plot-crucial information to individuals before reading a short story, the story was subsequently enjoyed as much as, or more than, unspoiled stories. Other research shows that these findings may be driven by an interaction of individual differences, such as need for cognition, rather than a broad spoiling effect. In Experiment 1, we tested if reported enjoyment of a narrative decreased even when participants were alerted to the presence of a plot spoiler, to extend previous findings for short stories while adding a condition informing participants beforehand that their short stories was being spoiled. Experiment 2 extended this methodology to full-length episodes of television. Our results were different from previously reported positive effects of spoilers and show that spoilers, under certain circumstances, have a negative effect on enjoyment for television but not short stories.
Keywords: Creativity, decision-making, thinking styles, fan behavior, language proficiency
Friday, August 17, 2018
Native speakers of Hebrew, Korean, Spanish, and English inflate their earnings less when they use a foreign language; it's due to a dual system account that suggests that self‐serving dishonesty is an automatic tendency, supported by a fast and intuitive system
Honesty Speaks a Second Language. Yoella Bereby‐Meyer et al. Topics in Cognitive Science, Jul 2018, https://doi.org/10.1111/tops.12360
Abstract: Theories of dishonest behavior implicitly assume language independence. Here, we investigated this assumption by comparing lying by people using a foreign language versus their native tongue. Participants rolled a die and were paid according to the outcome they reported. Because the outcome was private, they could lie to inflate their profit without risk of repercussions. Participants performed the task either in their native language or in a foreign language. With native speakers of Hebrew, Korean, Spanish, and English, we discovered that, on average, people inflate their earnings less when they use a foreign language. The outcome is explained by a dual system account that suggests that self‐serving dishonesty is an automatic tendency, which is supported by a fast and intuitive system. Because using a foreign language is less intuitive and automatic, it might engage more deliberation and reduce the temptation to lie. These findings challenge theories of ethical behavior to account for the role of the language in shaping ethical behavior.
Abstract: Theories of dishonest behavior implicitly assume language independence. Here, we investigated this assumption by comparing lying by people using a foreign language versus their native tongue. Participants rolled a die and were paid according to the outcome they reported. Because the outcome was private, they could lie to inflate their profit without risk of repercussions. Participants performed the task either in their native language or in a foreign language. With native speakers of Hebrew, Korean, Spanish, and English, we discovered that, on average, people inflate their earnings less when they use a foreign language. The outcome is explained by a dual system account that suggests that self‐serving dishonesty is an automatic tendency, which is supported by a fast and intuitive system. Because using a foreign language is less intuitive and automatic, it might engage more deliberation and reduce the temptation to lie. These findings challenge theories of ethical behavior to account for the role of the language in shaping ethical behavior.
Memory distortion may not always be maladaptive: in some cases, distortion can result from a memory system that optimally combines information in the service of the broader goals of the person
The adaptive nature of false memories is revealed by gist-based distortion of true memories. Timothy Brady, Daniel Schacter, George Alvarez. August 17, 2018. https://psyarxiv.com/zeg95/
Abstract: Human memory systems are subject to many imperfections, including memory distortions and the creation of false memories. Here, we demonstrate a case where memory distortion is adaptive, increasing the overall accuracy of memories. Participants viewed multiple real-world objects from a given category (10 airplanes, 10 backpacks…), and later recalled the color of each object. Participants were generally accurate, but even when they remembered having seen an item and remembered its color, they nevertheless reported the color as closer to the average color of its category than it really was. Although participants’ memories were systematically distorted, they were distorted in a way that is consistent with minimizing their average error according to a simple Bayesian analysis. In addition, and consistent with the Bayesian analysis, the bias toward the category center was larger when participant’s had greater uncertainty about the color of an item, but was present in all circumstances -- even when participants remembered an item, remembered its color, and reported high confidence in their color memory. Thus, memory distortion may not always be maladaptive: in some cases, distortion can result from a memory system that optimally combines information in the service of the broader goals of the person. Furthermore, this framework for thinking about memory distortion suggests that false memory can be thought of on a continuum with true memory: the greater uncertainty participants have about an individual item memory, the more they weight their gist memory; with no item information, they weight only their gist memory.
Abstract: Human memory systems are subject to many imperfections, including memory distortions and the creation of false memories. Here, we demonstrate a case where memory distortion is adaptive, increasing the overall accuracy of memories. Participants viewed multiple real-world objects from a given category (10 airplanes, 10 backpacks…), and later recalled the color of each object. Participants were generally accurate, but even when they remembered having seen an item and remembered its color, they nevertheless reported the color as closer to the average color of its category than it really was. Although participants’ memories were systematically distorted, they were distorted in a way that is consistent with minimizing their average error according to a simple Bayesian analysis. In addition, and consistent with the Bayesian analysis, the bias toward the category center was larger when participant’s had greater uncertainty about the color of an item, but was present in all circumstances -- even when participants remembered an item, remembered its color, and reported high confidence in their color memory. Thus, memory distortion may not always be maladaptive: in some cases, distortion can result from a memory system that optimally combines information in the service of the broader goals of the person. Furthermore, this framework for thinking about memory distortion suggests that false memory can be thought of on a continuum with true memory: the greater uncertainty participants have about an individual item memory, the more they weight their gist memory; with no item information, they weight only their gist memory.
Thursday, August 16, 2018
Evidence from the Berlin Wall: Positive relationship between urban density & productivity in a virtuous circle of ‘cumulative causation’
The Economics of Density: Evidence From the Berlin Wall. Gabriel M. Ahlfeldt, Stephen J. Redding, Daniel M. Sturm, Nikolaus Wolf. Econometrica, 2015. https://doi.org/10.3982/ECTA10876
Abstract: This paper develops a quantitative model of internal city structure that features agglomeration and dispersion forces and an arbitrary number of heterogeneous city blocks. The model remains tractable and amenable to empirical analysis because of stochastic shocks to commuting decisions, which yield a gravity equation for commuting flows. To structurally estimate agglomeration and dispersion forces, we use data on thousands of city blocks in Berlin for 1936, 1986, and 2006 and exogenous variation from the city's division and reunification. We estimate substantial and highly localized production and residential externalities. We show that the model with the estimated agglomeration parameters can account both qualitatively and quantitatively for the observed changes in city structure. We show how our quantitative framework can be used to undertake counterfactuals for changes in the organization of economic activity within cities in response, for example, to changes in the transport network.
Abstract: This paper develops a quantitative model of internal city structure that features agglomeration and dispersion forces and an arbitrary number of heterogeneous city blocks. The model remains tractable and amenable to empirical analysis because of stochastic shocks to commuting decisions, which yield a gravity equation for commuting flows. To structurally estimate agglomeration and dispersion forces, we use data on thousands of city blocks in Berlin for 1936, 1986, and 2006 and exogenous variation from the city's division and reunification. We estimate substantial and highly localized production and residential externalities. We show that the model with the estimated agglomeration parameters can account both qualitatively and quantitatively for the observed changes in city structure. We show how our quantitative framework can be used to undertake counterfactuals for changes in the organization of economic activity within cities in response, for example, to changes in the transport network.
Prenatal and postnatal cortisol and testosterone are related to parental caregiving quality in fathers, but not in mothers
Prenatal and postnatal cortisol and testosterone are related to parental caregiving quality in fathers, but not in mothers. Peter A. Bos et al. Psychoneuroendocrinology, Volume 97, November 2018, Pages 94-103. https://doi.org/10.1016/j.psyneuen.2018.07.013
Highlights
• Prenatal quality of caregiving interacted with T and CORT in fathers.
• Postnatal quality of caregiving interacted with T and CORT in fathers.
• Postnatal quality of paternal caregiving was negatively associated with prenatal CORT.
• No associations were observed between T or CORT and maternal quality of caregiving.
• These data show the value of a crying simulator for studying human parenting.
Abstract: Testosterone and cortisol have both been implicated in human parenting behavior. We investigated the relations between observed quality of caregiving during parent-child interactions and pre- and postnatal testosterone and cortisol levels, in both mothers (N = 88) and fathers (N = 57). Testosterone and cortisol were measured before and after interaction with an infant simulator (prenatal) and with their own child (postnatal) to index basal levels as well as steroid reactivity to the interaction. Our findings are that in fathers, interactions between cortisol and testosterone are related to quality of caregiving both pre- and postnatally. Prenatally there was a stronger negative relation between T and quality of caregiving in fathers with lower cortisol levels, and postnatally there was a stronger negative relation between cortisol and quality of caregiving in fathers high in testosterone levels. Furthermore, prenatal cortisol levels were related to paternal quality of caregiving during interaction with their own child. In mothers, no associations between quality of caregiving and our endocrine measures were observed. We interpret our findings in the context of hyperreactive physiological responses observed in parents at risk for insensitive caregiving, and in light of the dual-hormone hypothesis. The current findings contribute to the growing literature on the endocrine antecedents of human caregiving behavior.
Highlights
• Prenatal quality of caregiving interacted with T and CORT in fathers.
• Postnatal quality of caregiving interacted with T and CORT in fathers.
• Postnatal quality of paternal caregiving was negatively associated with prenatal CORT.
• No associations were observed between T or CORT and maternal quality of caregiving.
• These data show the value of a crying simulator for studying human parenting.
Abstract: Testosterone and cortisol have both been implicated in human parenting behavior. We investigated the relations between observed quality of caregiving during parent-child interactions and pre- and postnatal testosterone and cortisol levels, in both mothers (N = 88) and fathers (N = 57). Testosterone and cortisol were measured before and after interaction with an infant simulator (prenatal) and with their own child (postnatal) to index basal levels as well as steroid reactivity to the interaction. Our findings are that in fathers, interactions between cortisol and testosterone are related to quality of caregiving both pre- and postnatally. Prenatally there was a stronger negative relation between T and quality of caregiving in fathers with lower cortisol levels, and postnatally there was a stronger negative relation between cortisol and quality of caregiving in fathers high in testosterone levels. Furthermore, prenatal cortisol levels were related to paternal quality of caregiving during interaction with their own child. In mothers, no associations between quality of caregiving and our endocrine measures were observed. We interpret our findings in the context of hyperreactive physiological responses observed in parents at risk for insensitive caregiving, and in light of the dual-hormone hypothesis. The current findings contribute to the growing literature on the endocrine antecedents of human caregiving behavior.
Small to moderate effect sizes suggest that working together with a friend and simply having a friend were related significantly and positively both to cognitive and academic performance outcome
Do Friendships Afford Academic Benefits? A Meta-analytic Study. Kathryn R. Wentzel, Sophie Jablansky, Nicole R. Scalise. Educational Psychology Review, https://link.springer.com/article/10.1007/s10648-018-9447-5
Abstract: Using meta-analytic techniques, we examined systematically the evidence linking friendship to academically related outcomes, asking: To what extent is friendship related to academic performance and to academically related cognitive skills? Based on 22 studies that yielded 81 effect sizes and 28 independent samples, we examined relations between friendship and academically related cognitive skills (e.g., scientific reasoning, linguistic skills, spatial memory) and performance (e.g., academic grades, test scores). The role of friendship was defined in one of two ways: working with mutual friends on academic tasks and the experience of having friendships (as indicated by having at least one reciprocated friend or a number of friends). Small to moderate effect sizes suggest that working together with a friend and simply having a friend were related significantly and positively both to cognitive and performance outcomes. Student (sex, age, country of origin) and methodological (measurement, design) characteristics were not significant moderators of relations between friendship and academically related outcomes.
Abstract: Using meta-analytic techniques, we examined systematically the evidence linking friendship to academically related outcomes, asking: To what extent is friendship related to academic performance and to academically related cognitive skills? Based on 22 studies that yielded 81 effect sizes and 28 independent samples, we examined relations between friendship and academically related cognitive skills (e.g., scientific reasoning, linguistic skills, spatial memory) and performance (e.g., academic grades, test scores). The role of friendship was defined in one of two ways: working with mutual friends on academic tasks and the experience of having friendships (as indicated by having at least one reciprocated friend or a number of friends). Small to moderate effect sizes suggest that working together with a friend and simply having a friend were related significantly and positively both to cognitive and performance outcomes. Student (sex, age, country of origin) and methodological (measurement, design) characteristics were not significant moderators of relations between friendship and academically related outcomes.
The Psychology of Euthanasia: Why There Are No Easy Answers
The Psychology of Euthanasia: Why There Are No Easy Answers. Miguel Ricou & Tony Wainwright. European Psychologist. https://doi.org/10.1027/1016-9040/a000331
Abstract. Voluntary euthanasia has been legalized in several countries and associated with this development there has been much discussion concerning the relationship between the ethical principle of autonomy and the respect for human life. Psychological science should make a significant contribution to understanding how polarizing positions may be taken in such debates. However, little has been written concerning the implications of this research for the euthanasia debate and about the contributions of psychology. In the same way, very little is written about the psychologist’s role in countries where voluntary euthanasia or assisted suicide is legalized. We take as a starting assumption that there are no solutions that will meet everyone’s wishes or needs, but that an understanding of psychological ideas, can assist in developing strategies that may help people with opposing views come to some agreement. In our view, it is fundamental to a fruitful analysis, to leave aside a polarized approach and to understand that an eventual answer to the question of how we approach voluntary euthanasia will only be achieved after the hard process of carefully considering the consequences of having either legalized voluntary euthanasia or its prohibition, in the context of a psychological understanding.
Keywords: euthanasia, suffering, psychology, ethics, decision-making
Abstract. Voluntary euthanasia has been legalized in several countries and associated with this development there has been much discussion concerning the relationship between the ethical principle of autonomy and the respect for human life. Psychological science should make a significant contribution to understanding how polarizing positions may be taken in such debates. However, little has been written concerning the implications of this research for the euthanasia debate and about the contributions of psychology. In the same way, very little is written about the psychologist’s role in countries where voluntary euthanasia or assisted suicide is legalized. We take as a starting assumption that there are no solutions that will meet everyone’s wishes or needs, but that an understanding of psychological ideas, can assist in developing strategies that may help people with opposing views come to some agreement. In our view, it is fundamental to a fruitful analysis, to leave aside a polarized approach and to understand that an eventual answer to the question of how we approach voluntary euthanasia will only be achieved after the hard process of carefully considering the consequences of having either legalized voluntary euthanasia or its prohibition, in the context of a psychological understanding.
Keywords: euthanasia, suffering, psychology, ethics, decision-making
Placebo and nocebo effects constitute a major part of treatment success in medical interventions; there is interest in optimizing placebo effects to improve existing treatments and in examining ways to minimize nocebo effects to improve clinical outcome
Psychobiological Mechanisms of Placebo and Nocebo Effects: Pathways to Improve Treatments and Reduce Side Effects. Keith J. Petrie and Winfried Rief, Annual Review of Psychology, Vol. 70:- (Volume publication date January 2019). https://doi.org/10.1146/annurev-psych-010418-102907
Abstract: Placebo effects constitute a major part of treatment success in medical interventions. The nocebo effect also has a major impact, as it accounts for a significant proportion of the reported side effects for many treatments. Historically, clinical trials have aimed to reduce placebo effects; however, currently, there is interest in optimizing placebo effects to improve existing treatments and in examining ways to minimize nocebo effects to improve clinical outcome. To achieve these aims, a better understanding of the psychological and neurobiological mechanisms of the placebo and nocebo response is required. This review discusses the impact of the placebo and nocebo response in health care. We also examine the mechanisms involved in the placebo and nocebo effects, including the central mechanism of expectations. Finally, we examine ways to enhance placebo effects and reduce the impact of the nocebo response in clinical practice and suggest areas for future research.
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Open-Label Placebos
There has been recent interest in the use of open-label placebos, i.e., placebos that patients take knowing that they do not contain active medicine. Open-label placebos avoid the ethical issues involved in the deceptive prescription of placebos, which violates informed consent and may compromise the clinician–patient relationship. In the studies that have used open-label placebos, positive expectations are typically established by describing the power of the placebo effect as being established through conditioning and expectations and working through mind–body processes to improve health. The patient is informed that, even though they are not taking any active medicine, a placebo may still help improve health.
An initial RCT of 80 patients with IBS assigned patients to open-label placebo pills described as being “made of an inert substance, like sugar pills, that have been shown in clinical studies to produce significant improvements in IBS symptoms through mind-body self-healing processes” (Kaptchuk et al. 2010, p. 1) or to a no-treatment control group with the same amount ofprovider contact. Findings revealed significant improvements in symptoms at the 3-week follow-up.
The study demonstrated that open-label placebos delivered with a convincing rationale can improve subjective symptom reports in IBS. This prompted other researchers to investigate whether open-label placebos could improve outcomes in other conditions. Positive effects from open-label placebos have now been demonstrated in low-back pain (Carvalho et al. 2016), allergic rhinitis (Schaefer et al. 2016), and cancer-related fatigue (Hoenemeyer et al. 2018). A review of five open-label placebo studies found a positive medium effect size on subjective symptoms (Charlesworth et al. 2017).
While the initial results of studies of open-label placebos have been positive, there are some reasons to be cautious about the findings. A recent study evaluated the effect of open-label placebos on an objective, measurable physiological outcome, wound healing, and found no effect (Mathur et al. 2018), suggesting that the main benefit from open-label placebos could be restricted to subjective symptoms. The participants recruited into the initial studies for a mind–body treatment are also more likely to be receptive to open-label placebos than individuals with a preference for more traditional medical treatments. A further question at this stage is whether open-label placebo treatment will be acceptable to doctors and therefore more widely adopted.
To summarize, initial attempts to make use of placebo mechanisms to improve treatment outcomes indicate that this strategy could have enormous potential to improve clinical care. A number of the factors that have been found to improve placebo response could be easily incorporated into current treatments to maximize outcomes. These include optimizing patient’s expectations prior to treatment, using a positive role model to demonstrate treatment effectiveness, and inducing positive pretreatment experiences with similar drug treatments. Improving aspects of the clinical interaction, such empathy, shared decision making, and patient perceptions of physician competence, is also likely to lead to improved outcomes, although future research in this area is needed. It is likely that open-label placebos will also play a role in treatment in the future as an adjunct to standard therapies, either to reduce side effects or to maximize response to treatment, but the exact niche of open-label placebos has yet to be established.
Abstract: Placebo effects constitute a major part of treatment success in medical interventions. The nocebo effect also has a major impact, as it accounts for a significant proportion of the reported side effects for many treatments. Historically, clinical trials have aimed to reduce placebo effects; however, currently, there is interest in optimizing placebo effects to improve existing treatments and in examining ways to minimize nocebo effects to improve clinical outcome. To achieve these aims, a better understanding of the psychological and neurobiological mechanisms of the placebo and nocebo response is required. This review discusses the impact of the placebo and nocebo response in health care. We also examine the mechanisms involved in the placebo and nocebo effects, including the central mechanism of expectations. Finally, we examine ways to enhance placebo effects and reduce the impact of the nocebo response in clinical practice and suggest areas for future research.
---
Open-Label Placebos
There has been recent interest in the use of open-label placebos, i.e., placebos that patients take knowing that they do not contain active medicine. Open-label placebos avoid the ethical issues involved in the deceptive prescription of placebos, which violates informed consent and may compromise the clinician–patient relationship. In the studies that have used open-label placebos, positive expectations are typically established by describing the power of the placebo effect as being established through conditioning and expectations and working through mind–body processes to improve health. The patient is informed that, even though they are not taking any active medicine, a placebo may still help improve health.
An initial RCT of 80 patients with IBS assigned patients to open-label placebo pills described as being “made of an inert substance, like sugar pills, that have been shown in clinical studies to produce significant improvements in IBS symptoms through mind-body self-healing processes” (Kaptchuk et al. 2010, p. 1) or to a no-treatment control group with the same amount ofprovider contact. Findings revealed significant improvements in symptoms at the 3-week follow-up.
The study demonstrated that open-label placebos delivered with a convincing rationale can improve subjective symptom reports in IBS. This prompted other researchers to investigate whether open-label placebos could improve outcomes in other conditions. Positive effects from open-label placebos have now been demonstrated in low-back pain (Carvalho et al. 2016), allergic rhinitis (Schaefer et al. 2016), and cancer-related fatigue (Hoenemeyer et al. 2018). A review of five open-label placebo studies found a positive medium effect size on subjective symptoms (Charlesworth et al. 2017).
While the initial results of studies of open-label placebos have been positive, there are some reasons to be cautious about the findings. A recent study evaluated the effect of open-label placebos on an objective, measurable physiological outcome, wound healing, and found no effect (Mathur et al. 2018), suggesting that the main benefit from open-label placebos could be restricted to subjective symptoms. The participants recruited into the initial studies for a mind–body treatment are also more likely to be receptive to open-label placebos than individuals with a preference for more traditional medical treatments. A further question at this stage is whether open-label placebo treatment will be acceptable to doctors and therefore more widely adopted.
To summarize, initial attempts to make use of placebo mechanisms to improve treatment outcomes indicate that this strategy could have enormous potential to improve clinical care. A number of the factors that have been found to improve placebo response could be easily incorporated into current treatments to maximize outcomes. These include optimizing patient’s expectations prior to treatment, using a positive role model to demonstrate treatment effectiveness, and inducing positive pretreatment experiences with similar drug treatments. Improving aspects of the clinical interaction, such empathy, shared decision making, and patient perceptions of physician competence, is also likely to lead to improved outcomes, although future research in this area is needed. It is likely that open-label placebos will also play a role in treatment in the future as an adjunct to standard therapies, either to reduce side effects or to maximize response to treatment, but the exact niche of open-label placebos has yet to be established.
Wednesday, August 15, 2018
Thrifty targets are perceived as more intelligent, higher in self-control, more likable, emotionally closer to participants, lower in perceived vanity, lower in valuation of wealth in other, cheaper, and lower in short-term mating effort
Thrifty Spending as a (Paradoxically) Costly Signal: Perceptions of Others' Traits and Mating Patterns as a Function Of Their Spending Style. Lynzee J.Murray, Masters Thesis, 2018, http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1525457591695131
Abstract: According to the bargain hunting hypothesis, thriftiness requires a host of personality characteristics and psychological traits, namely contentiousness, intelligence, and self-control. Another part of the bargain hunting hypothesis attempts to explain why people, especially women, are often excited by the great deals they get and are motivated to tell others about them. According to this hypothesis, signaling thriftiness may signal to others a host of desirable traits, including the aforementioned traits as well as a good moral character, a long-term mating orientation, and a disinclination toward infidelity. In the current study, participants were asked to think of someone they know whose is thrifty or who engages in conspicuous consumption and to evaluate this person on a variety of personality and mating-related dimensions. We predicted that in comparison to conspicuous-consumption targets, thrifty targets would be perceived as more intelligent (including creativity and problem solving), conscientious, higher in self-control, more likeable, emotionally closer with participants, more agreeable, higher in moral character/virtue, lower in their degree of perceived vanity and in their valuation of wealth in others, and cheaper. We also predicted that thrifty targets would be perceived/rated as lower in short-term mating effort and infidelity probability, and higher in parenting effort and desirability as a long-term mate. The finding of our study supported the predictions that thrifty targets would be perceived as more intelligent, higher in self-control, more likable, emotionally closer to participants, lower in perceived vanity, lower in valuation of wealth in other, cheaper, and lower in short-term mating effort. Our findings also provided partial support for our predictions that thrifty targets would be perceived as more agreeable, higher in moral character, lower in infidelity probability, and higher in parenting effort and desirability as a long-term mate.
Subjects/Keywords: Psychology; Spending; Evolutionary Psychology; Thriftiness; Consumer Psychology; Conspicuous Consumption; Costly Signaling Theory
Abstract: According to the bargain hunting hypothesis, thriftiness requires a host of personality characteristics and psychological traits, namely contentiousness, intelligence, and self-control. Another part of the bargain hunting hypothesis attempts to explain why people, especially women, are often excited by the great deals they get and are motivated to tell others about them. According to this hypothesis, signaling thriftiness may signal to others a host of desirable traits, including the aforementioned traits as well as a good moral character, a long-term mating orientation, and a disinclination toward infidelity. In the current study, participants were asked to think of someone they know whose is thrifty or who engages in conspicuous consumption and to evaluate this person on a variety of personality and mating-related dimensions. We predicted that in comparison to conspicuous-consumption targets, thrifty targets would be perceived as more intelligent (including creativity and problem solving), conscientious, higher in self-control, more likeable, emotionally closer with participants, more agreeable, higher in moral character/virtue, lower in their degree of perceived vanity and in their valuation of wealth in others, and cheaper. We also predicted that thrifty targets would be perceived/rated as lower in short-term mating effort and infidelity probability, and higher in parenting effort and desirability as a long-term mate. The finding of our study supported the predictions that thrifty targets would be perceived as more intelligent, higher in self-control, more likable, emotionally closer to participants, lower in perceived vanity, lower in valuation of wealth in other, cheaper, and lower in short-term mating effort. Our findings also provided partial support for our predictions that thrifty targets would be perceived as more agreeable, higher in moral character, lower in infidelity probability, and higher in parenting effort and desirability as a long-term mate.
Subjects/Keywords: Psychology; Spending; Evolutionary Psychology; Thriftiness; Consumer Psychology; Conspicuous Consumption; Costly Signaling Theory
False memories can be caused by sleep deprivation, mindfulness meditation, and exposure to fake news, & no one is immune – not even people who can remember nearly every detail of their own lives
Current Directions in False Memory Research. Cara Laney, Elizabeth F. Loftus. Chapter 18 of Diversity in Harmony – Insights from Psychology: Proceedings of the 31st International Congress of Psychology. Aug 10 2018. https://doi.org/10.1002/9781119362081.ch18
Summary: False memory is an active and dynamic research area. This chapter discusses some of the most recent advances in theory, methodology, and application, as well as recent findings. Recent work has reinterpreted false memory through lenses of evolutionary psychology, pre‐ and postgoal emotions, and persuasion. New findings include false memories caused by sleep deprivation, mindfulness meditation, and exposure to fake news. Various procedures for differentiating between true and false memories are discussed; new research suggests that although some people may be especially susceptible to some kinds of false memories, no one is immune – not even people who can remember nearly every detail of their own lives. Some recent critiques of false memory research are summarized and disputed (as are some false memory findings). The critiques have come from parts of the therapeutic community working to minimize the impact of false memory research, but the impact – especially in the legal domain – remains clear.
Check also Can Mindfulness Be Too Much of a Good Thing? The Value of a Middle Way. Willoughby B Britton. Current Opinion in Psychology, Jan 2019. https://www.bipartisanalliance.com/2019/01/few-psychological-or-physiological.html
Summary: False memory is an active and dynamic research area. This chapter discusses some of the most recent advances in theory, methodology, and application, as well as recent findings. Recent work has reinterpreted false memory through lenses of evolutionary psychology, pre‐ and postgoal emotions, and persuasion. New findings include false memories caused by sleep deprivation, mindfulness meditation, and exposure to fake news. Various procedures for differentiating between true and false memories are discussed; new research suggests that although some people may be especially susceptible to some kinds of false memories, no one is immune – not even people who can remember nearly every detail of their own lives. Some recent critiques of false memory research are summarized and disputed (as are some false memory findings). The critiques have come from parts of the therapeutic community working to minimize the impact of false memory research, but the impact – especially in the legal domain – remains clear.
Check also Can Mindfulness Be Too Much of a Good Thing? The Value of a Middle Way. Willoughby B Britton. Current Opinion in Psychology, Jan 2019. https://www.bipartisanalliance.com/2019/01/few-psychological-or-physiological.html
Tuesday, August 14, 2018
Duping delight is the pleasure or satisfaction derived from successfully deceiving another person; may at first seem pathological behavior engaged by only a minority of the most deviant, but looked at more broadly, can be widely observed
Measuring Deception: A Look at Antecedents to Deceptive Intent. Randall J. Boyle, Jeffrey A. Clements and Jeffrey Gainer Proudfoot. The American Journal of Psychology, Vol. 131, No. 3 (Fall 2018), pp. 347-367. https://www.jstor.org/stable/10.5406/amerjpsyc.131.3.0347
Abstract: A Deceptive Belief Inventory scale is developed and validated using 10 first-order factors to represent 3 second-order constructs (deception confidence, duping delight, and guiltless deception). A new theoretical model describing how deception confidence, duping delight, and guiltless deception may influence a person's intent to deceive others is also tested. Traditional deceptive communication research has focused on situation-specific factors surrounding deception. This study focuses on understanding and assessing a person's propensity to deceive others. The findings of this study can be used to better understand the factors that may influence a person's reported propensity to deceive and ultimately be used to improve security procedures designed to protect critical information systems.
Abstract: A Deceptive Belief Inventory scale is developed and validated using 10 first-order factors to represent 3 second-order constructs (deception confidence, duping delight, and guiltless deception). A new theoretical model describing how deception confidence, duping delight, and guiltless deception may influence a person's intent to deceive others is also tested. Traditional deceptive communication research has focused on situation-specific factors surrounding deception. This study focuses on understanding and assessing a person's propensity to deceive others. The findings of this study can be used to better understand the factors that may influence a person's reported propensity to deceive and ultimately be used to improve security procedures designed to protect critical information systems.
We find that at least 31.2% of the citations to retracted articles happen a year after the article has been retracted, that 91.4% of these post-retraction citations are approving, & that problematic research continues to be approvingly cited long after the problems have been publicized
Propagation of Error: Approving Citations to Problematic Research. Ken Cor and Gaurav Sood. https://github.com/recite/propagation_of_error
Abstract: Reports of serious errors in published research are increasingly common. Once the issues have been made public, we expect approving citations to the problematic articles—citations noting no concerns with the cited article—to stop. Using a novel database of over 3,000 retracted articles and nearly 74,000 citations to the retracted articles as well as data from a prominent article that highlights a statistical error in a set of articles published in prominent journals, we estimate citation rates and rates of approving citations pre- and postnotification. We find that at least 31.2% of the citations to retracted articles happen a year after the article has been retracted. And that 91.4% of these post-retraction citations are approving. We also find that problematic research continues to be approvingly cited long after the problems have been publicized. Our results have implications for the design of scholarship discovery systems and scientific practice more generally.
Abstract: Reports of serious errors in published research are increasingly common. Once the issues have been made public, we expect approving citations to the problematic articles—citations noting no concerns with the cited article—to stop. Using a novel database of over 3,000 retracted articles and nearly 74,000 citations to the retracted articles as well as data from a prominent article that highlights a statistical error in a set of articles published in prominent journals, we estimate citation rates and rates of approving citations pre- and postnotification. We find that at least 31.2% of the citations to retracted articles happen a year after the article has been retracted. And that 91.4% of these post-retraction citations are approving. We also find that problematic research continues to be approvingly cited long after the problems have been publicized. Our results have implications for the design of scholarship discovery systems and scientific practice more generally.
People often have food leftovers, which may impact their eating behavior; given equal actual consumption, larger (vs. smaller) food leftovers made people feel they ate less; as a result, larger (vs. smaller) food leftovers led people to eat more and exercise less later
Out of proportion? The role of leftovers in eating-related affect and behavior. Aradhna Krishna, Linda Hagen. Journal of Experimental Social Psychology, https://doi.org/10.1016/j.jesp.2018.08.005
Highlights
• People often have food leftovers, which may impact their eating behavior.
• Given equal actual consumption, larger (vs. smaller) food leftovers made people feel they ate less.
• As a result, larger (vs. smaller) food leftovers led people to eat more and exercise less later.
• These findings have implications for the success of “Just Eat Half” interventions.
• The findings also underscore the importance of portion-size oriented policy interventions.
Abstract: It is well known that growing portion sizes increase consumption, but grossly enlarged portions also cause consumers to face more and more food leftovers. Despite the relevance of food leftovers, downstream effects of having more food leftovers on consumers' affect and behavior are unknown. In five studies, the authors test the idea that consumers may judge their actual consumption by looking at their leftovers. As such, larger leftovers may reduce perceived consumption and also impact other eating-related behaviors. Using both real and imagined food consumption and leftovers, the authors find that, holding the absolute amount of food consumption equal, larger (vs. smaller) food leftovers lead to reduced perceived consumption. This difference in perceived consumption has consequences for people's motivation to compensate for their eating. Larger (vs. smaller) food leftovers cause them to eat more in a subsequent unrelated food consumption task, and also to exercise less in an explicit calorie compensation task. The psychological drivers of this phenomenon are twofold: larger leftovers reduce perceived consumption, which leads people to feel better about themselves; and feeling better about themselves, in turn, reduces people's motivation to compensate. This research reveals a previously unknown negative consequence of grossly enlarged portion sizes and informs research on perceived consumption.
Highlights
• People often have food leftovers, which may impact their eating behavior.
• Given equal actual consumption, larger (vs. smaller) food leftovers made people feel they ate less.
• As a result, larger (vs. smaller) food leftovers led people to eat more and exercise less later.
• These findings have implications for the success of “Just Eat Half” interventions.
• The findings also underscore the importance of portion-size oriented policy interventions.
Abstract: It is well known that growing portion sizes increase consumption, but grossly enlarged portions also cause consumers to face more and more food leftovers. Despite the relevance of food leftovers, downstream effects of having more food leftovers on consumers' affect and behavior are unknown. In five studies, the authors test the idea that consumers may judge their actual consumption by looking at their leftovers. As such, larger leftovers may reduce perceived consumption and also impact other eating-related behaviors. Using both real and imagined food consumption and leftovers, the authors find that, holding the absolute amount of food consumption equal, larger (vs. smaller) food leftovers lead to reduced perceived consumption. This difference in perceived consumption has consequences for people's motivation to compensate for their eating. Larger (vs. smaller) food leftovers cause them to eat more in a subsequent unrelated food consumption task, and also to exercise less in an explicit calorie compensation task. The psychological drivers of this phenomenon are twofold: larger leftovers reduce perceived consumption, which leads people to feel better about themselves; and feeling better about themselves, in turn, reduces people's motivation to compensate. This research reveals a previously unknown negative consequence of grossly enlarged portion sizes and informs research on perceived consumption.
An experimental investigation into pornography’s effect on men’s perceptions of the likelihood of women engaging in porn-like sex
An experimental investigation into pornography’s effect on men’s perceptions of the likelihood of women engaging in porn-like sex. Dan Miller, Kerry Anne McBain, Peter Raggatt. Psychology of Popular Media Culture, Aug 13 , 2018. http://psycnet.apa.org/buy/2018-38814-001
Abstract: This experimental study investigates whether exposure to pornography affects men’s perceptions of the likelihood of women engaging in, and enjoying, “porn-like” sex. Participants (N = 418) were either exposed to nonpornographic control videos or pornographic videos in which a male taxi driver has sex with a female passenger. Participants’ perceptions of the likelihood of women engaging in various sexual practices commonly depicted in pornography (e.g., unprotected sex with a stranger and rough sex) were then assessed across 2 vignettes. In the first vignette, a male taxi driver propositions a female passenger. In the second, a male boss propositions a female employee. The study was administered online to maximize ecological validity. No effect was found for experimental exposure. However, an effect was detected for past exposure. Men who had viewed taxi-themed pornography in the past 6 months rated the female taxi vignette character as being more likely to engage in porn-like sex with a male taxi driver. Similarly, those who had viewed workplace-themed pornography in the past 6 months judged the female workplace vignette character as being more likely to engage in porn-like sex with a male boss. The implications of these findings for theoretical models of sexual media socialization are discussed.
---
Introduction
Due to the proliferation of the Internet, pornography is now more easily accessible than ever before. Given this accessibility, it is perhaps not surprising that survey research consistently finds pornography consumption to be commonplace, especially among young men. A meta-analysis of four large-scale, nationally-representative surveys estimates that 46% of US men and 16% of US women aged between 18 and 39 are weekly pornography viewers (Regnerus, Gordon, & Price, 2015), although several smaller surveys have reported higher weekly viewing figures, especially among men (Kvalem, Træen, Lewin, & Štulhofer 2014; Nelson et al., 2014; Miller, Hald, & Kidd, 2017; Morgan, 2011; Rosser et al., 2013; Sun, Miezan, Lee, & Shim, 2015; Træen & Daneback, 2013). Additionally, multiple studies report that more than 90% of men have viewed pornography at some point (Kvalem et al., 2014; Nelson et al., 2014; Miller, et al., 2017; Morgan, 2011; Mulya & Hald, 2014; Rosser et al., 2013; Sun, Miezan, Lee, & Shim, 2015; Træen & Daneback, 2013).
The high prevalence of pornography consumption raises questions about the potential socializing effects of pornography use. A great deal of research has been generated in response to this. One particularly fruitful theory to be applied to the area of sexual media socialization is sexual script theory (Gagnon & Simon, 2005, see also Weiderman, 2015). Simply put, sexual script theory posits that human sexual behaviour is guided by scripts: “the mental representations individuals construct and then use to make sense of their experience, including their own and others’ behavior” (Weiderman, 2015, p. 7). Wright (2011) builds on sexual script theory with his acquisition, activation, and application model of media sexual socialization (3AM; see also Wright & Bae, 2016; Wright & Tokunaga, 2015). The 3AM argues that pornography plays an important role in creating new scripts (acquisition), priming existing scripts (activation), and encouraging the utilization of scripts to inform attitudes and behaviors (application). Accordingly, pornography may influence what is thought of as normative, impacting perceptions of sexuality, sexual situations, sexual behaviours, and evaluations of sexual relations (Hald, Seaman, & Linz, 2014).
There is research indicating that pornography use affects consumers’ attitudes and behaviors in ways that are consistent with sexual script theory. For example, content-analytic studies suggest that mainstream pornography rarely depicts condom use (Gorman, Monk Turner, & Fish, 2010; Vannier, Currie, & O’Sullivan, 2014). To put this in the language of sexual script theory, much pornography contains scripts presenting condomless sex as normative. Wright, Tokunaga, and Kraus (2016) found that university students who frequently consumed pornography judged their peers to be less likely to use condoms (script acquisition and activation) and were themselves more likely to engage in condomless sex (script application). Similarly, pornography use has been found to be associated with a desire to engage in the kinds of sexual practices depicted in pornography (Morgan, 2011), permissiveness towards casual sex (Brown & L’Engle, 2009; Peter & Valkenburg, 2010), and more positive attitudes toward extramarital sex (Wright, Tokunaga, & Bae, 2014). One meta analysis of correlation studies found that pornography use is associated with attitudes supporting violence against women, with a stronger effect for violent pornography (which presumably would be more likely to contain scripts suggesting that violence against women is normative), compared to non-violent pornography (Hald, Malamuth, & Yuen, 2010).
Although these results are consistent with sexual script theory, alternative explanations cannot be ruled out due to the cross-sectional nature of many of these studies. For example, the selective exposure hypothesis (see Wright et al., 2016; Wright & Bae, 2016) would suggest that consumers seek out pornography which reflects their existing attitudes and behavioral tendencies, rather than pornographic scripts shaping these attitudes and behaviors (e.g., those who hold attitudes supporting violence against women may be more likely to seek out violent pornography). It is due to this problem of determining direction of causation that multiple authors (Hald, Seaman, & Linz, 2014; Wright & Bae, 2016) have called for more longitudinal and experimental studies into the effects of pornography.
While it is true that the pornography research literature relies heavily on cross-sectional evidence, some experimental studies are available to draw on. Allen, D’Alessio, and Brezgel (1995) meta-analyzed 33 experiments into the effect of pornography on aggression published between 1971 and 1984. Their analysis found experimental exposure to pornography to increase aggressive behavior. This effect was larger for violent pornography. However, the authors also found that this effect was moderated by experimental manipulation of anger. In the meta-analysis experimental exposure to pornography increased aggressive behaviour, but only among participants who were also provoked by a confederate. More recently, Wright and Tokunaga (2015) exposed male university students to explicit centerfolds. They found that the experimental exposure strengthened the sexual reductionism, masculinity validation, and nonrelational sexual beliefs of participants who did not regularly view such material. The centerfolds had no effect on the attitudes of participants who did regularly view such material (although the sexual reductionism, masculinity validation, and nonrelational sexual beliefs of this group were already high). Similarly, Hald and colleagues exposed male and female participants to 25 mins of non-violent pornographic videos (Hald & Malamuth, 2015; Hald, Malamuth, & Lange, 2013). They found experimental exposure to pornography increased attitudes supporting violence against women and hostile sexism among participants low in agreeableness (but not among those high in agreeableness). They also found experimental exposure to pornography to increase hostile sexism among female participants.
The early experiments meta-analyzed by Allen et al. (1995) have been criticized for
lacking ecological validity (Fisher & Barack, 1991; Fisher & Grenier, 1994)—both in terms
of the laboratory setting in which the studies were carried out and the frequent use of
experimental procedures that provided participants no option but to aggress (e.g., having
participants choose the strength of an electric shock to be delivered to a female confederate,
without giving participants the option of not shocking the confederate). While the more
recently-conducted experiments described above (Hald & Malamuth, 2015; Hald et al., 2013;
Wright & Tokunaga, 2015) differ from these early experiments in terms of the outcome
variables assessed, there are still issues surrounding their ecological validity. It has to be
acknowledged that viewing pornography in a laboratory setting is unusual and potentially
embarrassing for participants, and may affect the way participants respond on outcome
measures. Another issue that needs to be considered in regard to experimental investigations
into the effects of pornography is past exposure. As has been outlined above, the prevalence
of pornography consumption in the population is high (especially among men). As such, it is
questionable as to whether experimental exposure to 15–30 mins of pornographic content (the
typical level of experimental exposure) would be enough to create a meaningful difference
between the control and exposure groups in terms of the treatment (although it may be
enough to prime an existing script). We will refer to this as the past exposure problem.1
Conclusions and Implications
Whereas previous studies have tended to focus on pornography’s influence on consumers’ attitudes (e.g., sexism), the current study focused on pornography’s influence on judgements of frequency and probability, namely men’s judgements of the likelihood of women engaging in porn-like sex in situations similar to those depicted in particular genres of pornography (taxi- and workplace-themed pornography). The study provides some evidence that pornography can influence consumers’ judgements of social reality, by affecting consumers’ perceptions of the likelihood of women enthusiastically engaging in the kinds of sexual practices commonly depicted in pornography.
It could be argued that judgments about the likelihood of women having pornographic sex are less important than pornography’s effects on more general attitudes, such as sexism. However, we would suggest that pornography influencing such probability judgements may still have widespread societal implications, especially given the high prevalence of men’s pornography use. Furthermore, it is possible that perceptions around the likelihood of women engaging in, and enjoying, porn-like sex may themselves act to influence attitudes and behaviours more generally. For example, as is discussed above (see Introduction), Wright et al. (2016) found that pornography consumption is predictive of judging condom usage to be less common among one’s peers, which in turn, is associated with personally engaging in unprotected sex. In the same way, judging women to be more likely to engage in, and enjoy, porn-like sex may influence pornography users’ conceptions of sexual norms, such that users are more likely to believe porn-like sex to be the norm in both short- and long-term relationships. Conceivably this could flow-on to affect consumers’ attitudes (e.g., causing consumers to adopt more positive attitudes toward personally engaging in porn-like sex) and behaviors (e.g., causing consumers to imitate the sexual practices depicted in pornography with sexual partners, or even causing consumers to proposition strangers in the ways depicted in some pornography). In support of this notion, extant cross-sectional research suggests a positive association between pornography use and holding a preference for engaging in the kinds of sexual practices commonly depicted in pornography (Miller, McBain, Li, & Raggatt, 2018; Morgan, 2011). Shifts in pornography users’ conceptions of sexual norms could potentially foster sexual dissatisfaction within relationships. For example, pornography users may feel a sense of relative deprivation if their partners are unwilling to engage in, what they consider to be, “normal” sexual practices. Alternatively, pornography non-users may feel resentment if they are expected, or pressured, to engage in sexual practices which they have no interest in. Similarly, because pornography consumption reinforces the notion that porn-like sex is wildly pleasurable for all involved, pornography users may feel upset (or even sexually inadequate) if their partners do not find pornographic sex to be pleasurable. Alternatively, it could be argued that expanding societal conceptions around what is sexually normative might have positive repercussions, by reducing the stigma associated with sexual practices which have previously been stigmatized. Whether educating consumers on the non-representative nature of pornography would be enough to nullify the deleterious effects of pornography use is unclear.
Abstract: This experimental study investigates whether exposure to pornography affects men’s perceptions of the likelihood of women engaging in, and enjoying, “porn-like” sex. Participants (N = 418) were either exposed to nonpornographic control videos or pornographic videos in which a male taxi driver has sex with a female passenger. Participants’ perceptions of the likelihood of women engaging in various sexual practices commonly depicted in pornography (e.g., unprotected sex with a stranger and rough sex) were then assessed across 2 vignettes. In the first vignette, a male taxi driver propositions a female passenger. In the second, a male boss propositions a female employee. The study was administered online to maximize ecological validity. No effect was found for experimental exposure. However, an effect was detected for past exposure. Men who had viewed taxi-themed pornography in the past 6 months rated the female taxi vignette character as being more likely to engage in porn-like sex with a male taxi driver. Similarly, those who had viewed workplace-themed pornography in the past 6 months judged the female workplace vignette character as being more likely to engage in porn-like sex with a male boss. The implications of these findings for theoretical models of sexual media socialization are discussed.
---
Introduction
Due to the proliferation of the Internet, pornography is now more easily accessible than ever before. Given this accessibility, it is perhaps not surprising that survey research consistently finds pornography consumption to be commonplace, especially among young men. A meta-analysis of four large-scale, nationally-representative surveys estimates that 46% of US men and 16% of US women aged between 18 and 39 are weekly pornography viewers (Regnerus, Gordon, & Price, 2015), although several smaller surveys have reported higher weekly viewing figures, especially among men (Kvalem, Træen, Lewin, & Štulhofer 2014; Nelson et al., 2014; Miller, Hald, & Kidd, 2017; Morgan, 2011; Rosser et al., 2013; Sun, Miezan, Lee, & Shim, 2015; Træen & Daneback, 2013). Additionally, multiple studies report that more than 90% of men have viewed pornography at some point (Kvalem et al., 2014; Nelson et al., 2014; Miller, et al., 2017; Morgan, 2011; Mulya & Hald, 2014; Rosser et al., 2013; Sun, Miezan, Lee, & Shim, 2015; Træen & Daneback, 2013).
The high prevalence of pornography consumption raises questions about the potential socializing effects of pornography use. A great deal of research has been generated in response to this. One particularly fruitful theory to be applied to the area of sexual media socialization is sexual script theory (Gagnon & Simon, 2005, see also Weiderman, 2015). Simply put, sexual script theory posits that human sexual behaviour is guided by scripts: “the mental representations individuals construct and then use to make sense of their experience, including their own and others’ behavior” (Weiderman, 2015, p. 7). Wright (2011) builds on sexual script theory with his acquisition, activation, and application model of media sexual socialization (3AM; see also Wright & Bae, 2016; Wright & Tokunaga, 2015). The 3AM argues that pornography plays an important role in creating new scripts (acquisition), priming existing scripts (activation), and encouraging the utilization of scripts to inform attitudes and behaviors (application). Accordingly, pornography may influence what is thought of as normative, impacting perceptions of sexuality, sexual situations, sexual behaviours, and evaluations of sexual relations (Hald, Seaman, & Linz, 2014).
There is research indicating that pornography use affects consumers’ attitudes and behaviors in ways that are consistent with sexual script theory. For example, content-analytic studies suggest that mainstream pornography rarely depicts condom use (Gorman, Monk Turner, & Fish, 2010; Vannier, Currie, & O’Sullivan, 2014). To put this in the language of sexual script theory, much pornography contains scripts presenting condomless sex as normative. Wright, Tokunaga, and Kraus (2016) found that university students who frequently consumed pornography judged their peers to be less likely to use condoms (script acquisition and activation) and were themselves more likely to engage in condomless sex (script application). Similarly, pornography use has been found to be associated with a desire to engage in the kinds of sexual practices depicted in pornography (Morgan, 2011), permissiveness towards casual sex (Brown & L’Engle, 2009; Peter & Valkenburg, 2010), and more positive attitudes toward extramarital sex (Wright, Tokunaga, & Bae, 2014). One meta analysis of correlation studies found that pornography use is associated with attitudes supporting violence against women, with a stronger effect for violent pornography (which presumably would be more likely to contain scripts suggesting that violence against women is normative), compared to non-violent pornography (Hald, Malamuth, & Yuen, 2010).
Although these results are consistent with sexual script theory, alternative explanations cannot be ruled out due to the cross-sectional nature of many of these studies. For example, the selective exposure hypothesis (see Wright et al., 2016; Wright & Bae, 2016) would suggest that consumers seek out pornography which reflects their existing attitudes and behavioral tendencies, rather than pornographic scripts shaping these attitudes and behaviors (e.g., those who hold attitudes supporting violence against women may be more likely to seek out violent pornography). It is due to this problem of determining direction of causation that multiple authors (Hald, Seaman, & Linz, 2014; Wright & Bae, 2016) have called for more longitudinal and experimental studies into the effects of pornography.
While it is true that the pornography research literature relies heavily on cross-sectional evidence, some experimental studies are available to draw on. Allen, D’Alessio, and Brezgel (1995) meta-analyzed 33 experiments into the effect of pornography on aggression published between 1971 and 1984. Their analysis found experimental exposure to pornography to increase aggressive behavior. This effect was larger for violent pornography. However, the authors also found that this effect was moderated by experimental manipulation of anger. In the meta-analysis experimental exposure to pornography increased aggressive behaviour, but only among participants who were also provoked by a confederate. More recently, Wright and Tokunaga (2015) exposed male university students to explicit centerfolds. They found that the experimental exposure strengthened the sexual reductionism, masculinity validation, and nonrelational sexual beliefs of participants who did not regularly view such material. The centerfolds had no effect on the attitudes of participants who did regularly view such material (although the sexual reductionism, masculinity validation, and nonrelational sexual beliefs of this group were already high). Similarly, Hald and colleagues exposed male and female participants to 25 mins of non-violent pornographic videos (Hald & Malamuth, 2015; Hald, Malamuth, & Lange, 2013). They found experimental exposure to pornography increased attitudes supporting violence against women and hostile sexism among participants low in agreeableness (but not among those high in agreeableness). They also found experimental exposure to pornography to increase hostile sexism among female participants.
The early experiments meta-analyzed by Allen et al. (1995) have been criticized for
lacking ecological validity (Fisher & Barack, 1991; Fisher & Grenier, 1994)—both in terms
of the laboratory setting in which the studies were carried out and the frequent use of
experimental procedures that provided participants no option but to aggress (e.g., having
participants choose the strength of an electric shock to be delivered to a female confederate,
without giving participants the option of not shocking the confederate). While the more
recently-conducted experiments described above (Hald & Malamuth, 2015; Hald et al., 2013;
Wright & Tokunaga, 2015) differ from these early experiments in terms of the outcome
variables assessed, there are still issues surrounding their ecological validity. It has to be
acknowledged that viewing pornography in a laboratory setting is unusual and potentially
embarrassing for participants, and may affect the way participants respond on outcome
measures. Another issue that needs to be considered in regard to experimental investigations
into the effects of pornography is past exposure. As has been outlined above, the prevalence
of pornography consumption in the population is high (especially among men). As such, it is
questionable as to whether experimental exposure to 15–30 mins of pornographic content (the
typical level of experimental exposure) would be enough to create a meaningful difference
between the control and exposure groups in terms of the treatment (although it may be
enough to prime an existing script). We will refer to this as the past exposure problem.1
Conclusions and Implications
Whereas previous studies have tended to focus on pornography’s influence on consumers’ attitudes (e.g., sexism), the current study focused on pornography’s influence on judgements of frequency and probability, namely men’s judgements of the likelihood of women engaging in porn-like sex in situations similar to those depicted in particular genres of pornography (taxi- and workplace-themed pornography). The study provides some evidence that pornography can influence consumers’ judgements of social reality, by affecting consumers’ perceptions of the likelihood of women enthusiastically engaging in the kinds of sexual practices commonly depicted in pornography.
It could be argued that judgments about the likelihood of women having pornographic sex are less important than pornography’s effects on more general attitudes, such as sexism. However, we would suggest that pornography influencing such probability judgements may still have widespread societal implications, especially given the high prevalence of men’s pornography use. Furthermore, it is possible that perceptions around the likelihood of women engaging in, and enjoying, porn-like sex may themselves act to influence attitudes and behaviours more generally. For example, as is discussed above (see Introduction), Wright et al. (2016) found that pornography consumption is predictive of judging condom usage to be less common among one’s peers, which in turn, is associated with personally engaging in unprotected sex. In the same way, judging women to be more likely to engage in, and enjoy, porn-like sex may influence pornography users’ conceptions of sexual norms, such that users are more likely to believe porn-like sex to be the norm in both short- and long-term relationships. Conceivably this could flow-on to affect consumers’ attitudes (e.g., causing consumers to adopt more positive attitudes toward personally engaging in porn-like sex) and behaviors (e.g., causing consumers to imitate the sexual practices depicted in pornography with sexual partners, or even causing consumers to proposition strangers in the ways depicted in some pornography). In support of this notion, extant cross-sectional research suggests a positive association between pornography use and holding a preference for engaging in the kinds of sexual practices commonly depicted in pornography (Miller, McBain, Li, & Raggatt, 2018; Morgan, 2011). Shifts in pornography users’ conceptions of sexual norms could potentially foster sexual dissatisfaction within relationships. For example, pornography users may feel a sense of relative deprivation if their partners are unwilling to engage in, what they consider to be, “normal” sexual practices. Alternatively, pornography non-users may feel resentment if they are expected, or pressured, to engage in sexual practices which they have no interest in. Similarly, because pornography consumption reinforces the notion that porn-like sex is wildly pleasurable for all involved, pornography users may feel upset (or even sexually inadequate) if their partners do not find pornographic sex to be pleasurable. Alternatively, it could be argued that expanding societal conceptions around what is sexually normative might have positive repercussions, by reducing the stigma associated with sexual practices which have previously been stigmatized. Whether educating consumers on the non-representative nature of pornography would be enough to nullify the deleterious effects of pornography use is unclear.
Liberals prefer the following in their narrative TV programs: innovative structure & style, ambiguous/nuanced depictions of moral issues, storylines that extend beyond individual episodes, diverse casts, & explicit depictions of sexuality & gore
Split screens: A content analysis of American liberals’ and conservatives’ respective television favorites. Nick Rogers. Psychology of Popular Media Culture, Aug 13 , 2018. http://psycnet.apa.org/buy/2018-38804-001
Abstract: This project uses a quantitative content analysis to the realm of scripted narrative TV, to examine how “motivated social cognition” may drive ideological partisans to sort themselves within cultural realms that have no obvious political content. The analysis reveals that the substance of the TV programs disproportionately preferred by either liberals or conservatives differs significantly. Specifically, liberals prefer the following in their narrative TV programs: (a) innovative structure and style, (b) ambiguous/nuanced depictions of moral issues, (c) storylines that extend beyond individual episodes, (d) diverse casts, and (e) explicit depictions of sexuality and gore. Conservatives, by contrast, favor the following: (a) conventional style and predictable storytelling, (b) clear depictions of “good” and “bad,” (c) storylines that are resolved within an individual episode, (d) homogenous casts, and (e) “wholesome” (or absent) depictions of sexuality and gore.
Abstract: This project uses a quantitative content analysis to the realm of scripted narrative TV, to examine how “motivated social cognition” may drive ideological partisans to sort themselves within cultural realms that have no obvious political content. The analysis reveals that the substance of the TV programs disproportionately preferred by either liberals or conservatives differs significantly. Specifically, liberals prefer the following in their narrative TV programs: (a) innovative structure and style, (b) ambiguous/nuanced depictions of moral issues, (c) storylines that extend beyond individual episodes, (d) diverse casts, and (e) explicit depictions of sexuality and gore. Conservatives, by contrast, favor the following: (a) conventional style and predictable storytelling, (b) clear depictions of “good” and “bad,” (c) storylines that are resolved within an individual episode, (d) homogenous casts, and (e) “wholesome” (or absent) depictions of sexuality and gore.
Construing minds as different from bodies entails the intuition that mental well-being has little material substrate which in turn attenuates health-sustaining behaviors
Mind-Body Dualism and Health Revisited. How Belief in Dualism Shapes Health Behavior. Pascal Burgmer, Matthias Forstmann. Social Psychology (2018), 49, pp. 219-230. https://doi.org/10.1027/1864-9335/a000344
Abstract: Does a sound mind require a sound body? Whether or not lay people subscribe to this notion depends on their belief in mind-body dualism and critically shapes their health-related behaviors. Six studies (N = 1,710) revisit the relation between dualism and health. We replicate the negative correlation between belief in dualism and health behavior (Study 1) and extend it to behavior in the field (Study 2). Studies 3a and 3b investigate how belief in dualism shapes intuitions about the material origin of psychological well-being, while Studies 4a and 4b examine how these intuitions determine health-related outcomes. In sum, construing minds as different from bodies entails the intuition that mental well-being has little material substrate which in turn attenuates health-sustaining behaviors.
Keywords: health attitudes, health behavior, mind-body dualism, implicit theories, experimental philosophy
Abstract: Does a sound mind require a sound body? Whether or not lay people subscribe to this notion depends on their belief in mind-body dualism and critically shapes their health-related behaviors. Six studies (N = 1,710) revisit the relation between dualism and health. We replicate the negative correlation between belief in dualism and health behavior (Study 1) and extend it to behavior in the field (Study 2). Studies 3a and 3b investigate how belief in dualism shapes intuitions about the material origin of psychological well-being, while Studies 4a and 4b examine how these intuitions determine health-related outcomes. In sum, construing minds as different from bodies entails the intuition that mental well-being has little material substrate which in turn attenuates health-sustaining behaviors.
Keywords: health attitudes, health behavior, mind-body dualism, implicit theories, experimental philosophy
Sexual coercion perpetrators were more accurate than other violent men in the recognition of female facial disgust; female facial expressions of disgust could be subtle cues to their sexual infidelity that motivate sexual coercion in some men
Facial emotion recognition in violent men. Domagoj Švegar, Karolina Horvat, Igor Kardum. International Journal of Psychology, https://doi.org/10.1002/ijop.12522
Abstract: The goal of this study was to explore the ability of violent men to recognise facial affect. In contrast to traditional approaches to this research question, we took the effects of the models' sex and different types of violent behaviour into consideration. Data obtained from 71 violent men revealed that they recognised facial expressions of fear (p = .019) and disgust (p = .013) more accurately when displayed by female than male models. The opposite was found for angry faces (p = .006), while the models' sex did not affect the recognition of sad, happy and surprised facial expressions or neutral faces. Furthermore, sexual coercion perpetrators were more accurate than other violent men in the recognition of female facial disgust (p = .006). These results are discussed in the context of social learning theory, and the hypothesis that female facial expressions of disgust could be subtle cues to their sexual infidelity that motivate sexual coercion in some men.
Abstract: The goal of this study was to explore the ability of violent men to recognise facial affect. In contrast to traditional approaches to this research question, we took the effects of the models' sex and different types of violent behaviour into consideration. Data obtained from 71 violent men revealed that they recognised facial expressions of fear (p = .019) and disgust (p = .013) more accurately when displayed by female than male models. The opposite was found for angry faces (p = .006), while the models' sex did not affect the recognition of sad, happy and surprised facial expressions or neutral faces. Furthermore, sexual coercion perpetrators were more accurate than other violent men in the recognition of female facial disgust (p = .006). These results are discussed in the context of social learning theory, and the hypothesis that female facial expressions of disgust could be subtle cues to their sexual infidelity that motivate sexual coercion in some men.
The value of odorants in selecting a romantic partner seems to reflect two different underlying attitudes: One values all aspects of the smell of a lover, while the other only finds it important that the lover does not smell badly
Olfactory Awareness and the Self-Reported Importance of Olfactory Information in Romantic Interest. Michelle VanHatten, Caitlin Cunningham, Theresa L. White. Chemosensory Perception, https://link.springer.com/article/10.1007/s12078-018-9248-8
Abstract
Introduction: Many people seem to be looking for similar attributes when searching for a potential romantic partner. Olfactory social cues can be important parts of the process, though there are individual differences as to their value. Gay men, for example, value scent less in selecting a romantic partner than do heterosexual men (White and Cunningham, Chemosens Percept 10:31–41, 2017). Is it possible that the relative importance of olfaction in mate selection is simply a natural consequence of being generally aware of odorants?
Method: The present study examined the relationship between odor awareness and odor importance in mating in two studies. Participants in each of the studies completed both the Romantic Interests Survey (Herz and Inzlich, Evol Hum Behav 23:359–364, 2002) and the Odor Awareness Survey (Smeets et al., Chem Senses 33:725–734, 2008). In the first study, 455 college-aged heterosexual individuals were surveyed, while in the second study, 453 individuals varying in sexual preference (142 heterosexual women, 161 heterosexual men, and 150 gay men) completed the questionnaires.
Results: Principle components analyses from both studies revealed two different components underlying scores on the RIS; one component best accounted for OAS scores. Regression analysis for both studies indicated that OAS scores predicted the first RIS principle component, but not the second one.
Conclusions: The value of odorants in selecting a romantic partner seems to reflect two different underlying attitudes. The first attitude values all aspects of the smell of a lover, while the second only finds it important that the lover does not smell badly. Odor awareness is related only to the first of these attitudes.
Implications: These findings suggest that odor awareness accounts for some of the attitudes concerning the value of odors in mate selection, but not all of them. Other factors, such as the need to avoid aversive stimuli, may also contribute to the relative importance of olfaction in selecting a partner.
Abstract
Introduction: Many people seem to be looking for similar attributes when searching for a potential romantic partner. Olfactory social cues can be important parts of the process, though there are individual differences as to their value. Gay men, for example, value scent less in selecting a romantic partner than do heterosexual men (White and Cunningham, Chemosens Percept 10:31–41, 2017). Is it possible that the relative importance of olfaction in mate selection is simply a natural consequence of being generally aware of odorants?
Method: The present study examined the relationship between odor awareness and odor importance in mating in two studies. Participants in each of the studies completed both the Romantic Interests Survey (Herz and Inzlich, Evol Hum Behav 23:359–364, 2002) and the Odor Awareness Survey (Smeets et al., Chem Senses 33:725–734, 2008). In the first study, 455 college-aged heterosexual individuals were surveyed, while in the second study, 453 individuals varying in sexual preference (142 heterosexual women, 161 heterosexual men, and 150 gay men) completed the questionnaires.
Results: Principle components analyses from both studies revealed two different components underlying scores on the RIS; one component best accounted for OAS scores. Regression analysis for both studies indicated that OAS scores predicted the first RIS principle component, but not the second one.
Conclusions: The value of odorants in selecting a romantic partner seems to reflect two different underlying attitudes. The first attitude values all aspects of the smell of a lover, while the second only finds it important that the lover does not smell badly. Odor awareness is related only to the first of these attitudes.
Implications: These findings suggest that odor awareness accounts for some of the attitudes concerning the value of odors in mate selection, but not all of them. Other factors, such as the need to avoid aversive stimuli, may also contribute to the relative importance of olfaction in selecting a partner.
Older age was correlated to better scores on each of the four financial decision‐making measures, and has more experience‐based knowledge, & less negative emotions about financial decisions (both of which are particularly helpful for better financial decision-making)
Age differences in financial decision making: The benefits of more experience and less negative emotions. Wiebke Eberhardt, Wändi Bruine de Bruin, JoNell Strough. Journal of Behavioral Decision Making, https://doi.org/10.1002/bdm.2097
Abstract: The emerging literature on aging and decision making posits that decision‐making competence changes with age, as a result of age differences in various cognitive and noncognitive individual‐differences characteristics. In a national life‐span sample from the United Kingdom (N = 926), we examined age differences in financial decisions, including performance measures of sunk cost and credit card repayment decisions, and self‐report measures of money management and financial decision outcomes. Participants also completed four individual‐differences characteristics that have been proposed as relevant to financial decision making, including two cognitive ones (numeracy and experience‐based knowledge) and two noncognitive ones (negative emotions about financial decisions). First, we examined how age was related to the four financial decision‐making measures and the four individual‐differences characteristics. Older age was correlated to better scores on each of the four financial decision‐making measures, more experience‐based knowledge, less negative emotions about financial decisions, whereas numeracy and motivation were not significantly correlated with age. Second, we found that considering both the two cognitive and the two noncognitive individual‐differences characteristics increased predictions of financial decision making, as compared with considering either alone. Third, we examined how these four individual‐differences characteristics contributed to age differences in financial decision making. Older adults' higher levels of experience‐based knowledge and lower levels of negative emotions seemed to especially benefit their financial decision making. We discuss implications for theories on aging and decision making, as well as for interventions targeting financial decisions.
Abstract: The emerging literature on aging and decision making posits that decision‐making competence changes with age, as a result of age differences in various cognitive and noncognitive individual‐differences characteristics. In a national life‐span sample from the United Kingdom (N = 926), we examined age differences in financial decisions, including performance measures of sunk cost and credit card repayment decisions, and self‐report measures of money management and financial decision outcomes. Participants also completed four individual‐differences characteristics that have been proposed as relevant to financial decision making, including two cognitive ones (numeracy and experience‐based knowledge) and two noncognitive ones (negative emotions about financial decisions). First, we examined how age was related to the four financial decision‐making measures and the four individual‐differences characteristics. Older age was correlated to better scores on each of the four financial decision‐making measures, more experience‐based knowledge, less negative emotions about financial decisions, whereas numeracy and motivation were not significantly correlated with age. Second, we found that considering both the two cognitive and the two noncognitive individual‐differences characteristics increased predictions of financial decision making, as compared with considering either alone. Third, we examined how these four individual‐differences characteristics contributed to age differences in financial decision making. Older adults' higher levels of experience‐based knowledge and lower levels of negative emotions seemed to especially benefit their financial decision making. We discuss implications for theories on aging and decision making, as well as for interventions targeting financial decisions.
Monday, August 13, 2018
Early life deprivation promotes the development of strategies that minimize the downside costs of uncertainty across domains, which results in greater risk-aversion, present-orientation, & prosociality; these effects need not be dependent on salient cues to mortality
An uncertainty management perspective on long-run impacts of adversity: The influence of childhood socioeconomic status on risk, time, and social preferences. Dorsa Amir, Matthew R. Jordan, David G. Rand. Journal of Experimental Social Psychology, Volume 79, November 2018, Pages 217-226. https://doi.org/10.1016/j.jesp.2018.07.014
Abstract: While there has been a recent increase in focus on the role of early life socioeconomic status (SES) on preferences and decision-making, there is still debate surrounding the proper theoretical framework for understanding such effects. Some have argued that early life SES can fundamentally shift time preferences per se, such that those from low SES backgrounds favor current rewards over future rewards. Others have argued that, while early life SES has lasting effects on behavior, such effects are only observable in the presence of salient cues to mortality. Here, we propose an alternative framework that centers on environmental uncertainty. In this uncertainty management framework, early life deprivation promotes the development of strategies that minimize the downside costs of uncertainty across domains. We argue that this focus on managing uncertainty results in greater risk-aversion, present-orientation, and prosociality. Furthermore, these effects need not be dependent on salient cues to mortality. Across four large samples of participants (total N = 4714), we find that childhood deprivation uniquely predicts greater risk-aversion (both incentivized and hypothetical) and greater prosociality in economic games. Childhood deprivation also predicts greater present-orientation, but not above-and beyond current SES. We further find that mortality cues are not necessary to elicit these differences. Our results support an uncertainty management perspective on the effects of childhood SES on risk, time, and social preferences.
Abstract: While there has been a recent increase in focus on the role of early life socioeconomic status (SES) on preferences and decision-making, there is still debate surrounding the proper theoretical framework for understanding such effects. Some have argued that early life SES can fundamentally shift time preferences per se, such that those from low SES backgrounds favor current rewards over future rewards. Others have argued that, while early life SES has lasting effects on behavior, such effects are only observable in the presence of salient cues to mortality. Here, we propose an alternative framework that centers on environmental uncertainty. In this uncertainty management framework, early life deprivation promotes the development of strategies that minimize the downside costs of uncertainty across domains. We argue that this focus on managing uncertainty results in greater risk-aversion, present-orientation, and prosociality. Furthermore, these effects need not be dependent on salient cues to mortality. Across four large samples of participants (total N = 4714), we find that childhood deprivation uniquely predicts greater risk-aversion (both incentivized and hypothetical) and greater prosociality in economic games. Childhood deprivation also predicts greater present-orientation, but not above-and beyond current SES. We further find that mortality cues are not necessary to elicit these differences. Our results support an uncertainty management perspective on the effects of childhood SES on risk, time, and social preferences.
Women are attracted to men who display heroism and altruism, this preference is higher when the male is attractive compared to unattractive, and preferences for prosocial traits were higher when seeking a long-term compared to a short-term partner
Margana, Lacey, Manpal S. Bhogal, James E. Bartlett, and Daniel Farrelly. 2018. “Exploring Altruism and Heroism: The Effects of Physical Attraction in Female Mate Choice.” PsyArXiv. August 13. doi:10.31234/osf.io/kgpv
Abstract: The role of prosocial behaviour in female mate choice has been extensively explored, focusing on the desirability of altruism in potential mates, as well as altruism being a mating signal. However, little research has focused on the desirability of heroism and altruism in potential partners. Furthermore, the synergistic effect of attractiveness on the desirability of prosocial traits has only recently been explored, and to our knowledge, has not explored in relation to the desirability of heroism in a romantic partner. We explored the effect of prosociality and attractiveness on female desirability ratings (n=198), and whether desirability was influenced by whether women were seeking a short-term or long-term relationship. We find that women are attracted to men who display heroism and altruism, and this preference is higher when the male is attractive compared to unattractive. Furthermore, preferences for prosocial traits were higher when seeking a long-term compared to a short-term partner. Our findings add to the literature on prosocial behaviour and mate choice.
Abstract: The role of prosocial behaviour in female mate choice has been extensively explored, focusing on the desirability of altruism in potential mates, as well as altruism being a mating signal. However, little research has focused on the desirability of heroism and altruism in potential partners. Furthermore, the synergistic effect of attractiveness on the desirability of prosocial traits has only recently been explored, and to our knowledge, has not explored in relation to the desirability of heroism in a romantic partner. We explored the effect of prosociality and attractiveness on female desirability ratings (n=198), and whether desirability was influenced by whether women were seeking a short-term or long-term relationship. We find that women are attracted to men who display heroism and altruism, and this preference is higher when the male is attractive compared to unattractive. Furthermore, preferences for prosocial traits were higher when seeking a long-term compared to a short-term partner. Our findings add to the literature on prosocial behaviour and mate choice.
Phaesants: Apparently ‘poor’ cognitive performance (slow reversal speed suggesting low behavioural flexibility) correlates with fitness benefits in at least some circumstances, implying a novel mechanism by which continued exaggeration of cognitive abilities may be constrained
The quick are the dead: pheasants that are slow to reverse a learned association survive for longer in the wild. Joah R. Madden, Ellis J. G. Langley, Mark A. Whiteside, Christine E. Beardsworth, Jayden O. van Horik. Philosophical Transactions of the Royal Society B: Biological Sciences, September 26 2018, Volume 373, issue 1756. http://rstb.royalsocietypublishing.org/content/373/1756/20170297
Abstract: Cognitive abilities probably evolve through natural selection if they provide individuals with fitness benefits. A growing number of studies demonstrate a positive relationship between performance in psychometric tasks and (proxy) measures of fitness. We assayed the performance of 154 common pheasant (Phasianus colchicus) chicks on tests of acquisition and reversal learning, using a different set of chicks and different set of cue types (spatial location and colour) in each of two years and then followed their fates after release into the wild. Across all birds, individuals that were slow to reverse previously learned associations were more likely to survive to four months old. For heavy birds, individuals that rapidly acquired an association had improved survival to four months, whereas for light birds, slow acquirers were more likely to be alive. Slow reversers also exhibited less exploratory behaviour in assays when five weeks old. Fast acquirers visited more artificial feeders after release. In contrast to most other studies, we showed that apparently ‘poor’ cognitive performance (slow reversal speed suggesting low behavioural flexibility) correlates with fitness benefits in at least some circumstances. This correlation suggests a novel mechanism by which continued exaggeration of cognitive abilities may be constrained.
---
1. Introduction
One powerful approach to understand how natural selection may act on cognition is to measure the performance of individuals in a particular cognitive domain, and then explore how their performance correlates with a (proxy) fitness measure [1,2]. This is achieved by deploying explicit psychometric tasks targeting specific, defined cognitive processes [3,4]. Because fitness itself is hard to measure [5], researchers tend to use proxies that are presumed to correspond to reproductive success and/or survival. This correlational approach has predominantly revealed a positive relationship between an individual's performance in the psychometric task and a (proxy) measure of their fitness. Ants Lasius niger that exhibited faster route learning had greater colony-level foraging success [6]. Male African striped mice (Rhabdomys pumilio) that escaped quickly from mazes also had increased probability of surviving to the breeding season [7]. Male guppies (Poecilia reticulata) that learned mazes quickly were preferred by females [8]. Male bitterling (Rhodeus ocellatus) (practising a ‘sneaker’ strategy) that exhibited better maze learning subsequently had higher reproductive success [9]. Male song sparrows (Melospiza melodia) that demonstrated better control in a detour-reaching task had a larger song repertoire [10]. Male starlings (Sturnus vulgaris) with better spatial learning exhibited longer song bouts [11]. One study of female Australian magpies (Cracticus tibicen dorsalis) reported a link between their reproductive success and a general factor summarizing their performance in a battery of four tasks [12]. By contrast, a study of spotted bowerbirds (Ptilonorhynchus maculatus) found no relationship between a male's mating success and his performance in a battery of six tasks, either individually or when his performance was summarized by a single component [13]. Only one study has reported a negative relationship: male song sparrows that were fast at spatial learning also had smaller song repertoires [14]. This implies that natural selection generally leads to more exaggerated cognitive performance and associated abilities.
Interpretation of these previous studies is complicated by three factors. First, in all cases except one [12], a single assay has been used for each cognitive process being investigated. Reliance on a single assay risks a misattribution of the mechanisms driving individual performance. For example, learning to discriminate between two colour cues may indicate the specific ability or inherent motivation to prefer one colour over another [3], rather than the more general ability to learn associatively. A more robust method would be to use two (or more) tests that assay the same putative cognitive mechanism but differ in format or cue uses and hence triangulate on the outcome (Volter et al. [15]). We considered two ubiquitous cognitive processes and tested each using two different test variants. Associative learning involves learning to associate a stimulus with a reward and may be tested using a binary discrimination. Reversal learning may be measured by the speed at which such a previously learned association can be reversed. Reversal learning is considered to indicate an individual's ability to exert executive, inhibitory control and thus be behaviourally flexible ([16,17] corvids (Gymnorhinus cyanocephalus, Nucifraga columbiana, Aphelocoma californica); but see also [18] humans). The processes have been linked to specific behaviours and fitness consequences. Associative learning performance determines adult foraging strategies ([19] sparrow, Passer domesticus) and rapid learning speeds enhance individual's foraging or reproductive success ([20,21] grasshopper, Schistocerca americana; wasp, Biosteres arisanus). Flexibility permits rapid switching between different optimal decisions in changeable environments [22] so that more behaviourally flexible individuals have improved invasion success ([23] Birds) or a better ability to track fluctuating social groups ([24] Primates). The two processes (associative learning and reversal learning) may be closely related to one another. In several other species, speeds of associative learning and reversal learning are negatively related ([25–27] myna, chickadee, scrub-jay (Aphelocoma coerulescens), red junglefowl (Gallus gallus)). However, this negative relationship is not inevitable ([13,28] bowerbird, robin (Petroica longipes)) and indeed may be positive [29] or moderated by another factor e.g. testosterone [25].
Second, previous studies have not attempted to explicitly test how performance in abstract cognitive tasks relates to specific behaviours upon which selection may act. For example, it is not clear how improved inhibitory control as revealed by performance in a detour task may relate to song-learning processes [10], or how the ability to navigate a maze manifests in improved mating success [9]. One possibility is that cognitive performances and natural behaviours are linked by an overarching personality, such that an individual's behaviour in one context (a cognitive task) is linked to their behaviour in another context [30,31]. Alternatively, a cognitive ability has an immediate link to a natural behaviour, independent of personality. For example, performance in maze learning may correspond to the methods by which an individual learns to navigate their environment and recall feeding and refuge locations. By explicitly testing how cognitive abilities relate to broader personality assays, or more specific behaviours likely to relate to fitness outcomes, we can better understand how selection may act on these abilities.
Finally, studies have either had to test wild individuals for whom prior experience, social ranking and/or age is unknown, or they have relied on laboratory systems where the putative fitness consequences are hard to relate to the natural world. Administering controlled psychometric tests to wild animals, in which a large, random and reasonably complete sample of individuals participate over a large number of repeated presentations is problematic [1–4]. One solution is to capture animals from the wild and take them into captivity where they can be tested before release back into the wild. This approach encounters two problems. First, capture may not be random [32], so that the sample tested is not representative of the wild population. Second, individuals may have undergone different prior experiences that could lead to biases or preferences (e.g. for a particular colour) developed in other contexts that skew their performance in tests [3]. Such problems may be overcome by testing captive-reared individuals where prior experiences can be controlled and participation ensured. However, captive animals are not subject to natural selective pressures because predators are excluded and resources are provided in excess, and hence robust and relevant fitness measures are difficult to collect. This may explain why previous studies have used proxy measures of fitness.
We made use of a unique study system, the common pheasant (Phasianus colchicus) (hereafter pheasants). In the UK, these birds can be reared in captivity from hatching and subsequently released into the wild (for hunting). This ensures that individuals all experience identical developmental trajectories and prior experiences, all can be tested under controlled conditions and, critically, after release can be subject to natural selective pressures in the wild, where their fates can be monitored. We reared pheasant chicks from hatching to 10 weeks under controlled conditions in 2014 and 2015, and during this time we could subject them to psychometric tests of acquisition and reversal learning [33]. We used two sets of tests of particular processes, specifically the acquisition and reversal of associations between cues and rewards, using two different task paradigms (one discriminating colours and the other discriminating spatial positions on the test apparatus), with one task paradigm used in each year, to improve our confidence that it was the cognitive process that we were measuring rather than simply response to one particular set of cues. Critically, we then released birds into the wild and followed their fates, using survival as an unambiguous indicator of their fitness. Pheasant survival may be affected by year [34,35], sex ([36,37], but see also [38]), mass ([39], but see also [40]) and interactions between them (e.g. [41]). Therefore, we considered these in conjunction with performances in the cognitive tests. Pheasant mortality is typically high, especially in early life when birds are first independent, due to both terrestrial and avian predators [41,42]. This mortality occurs when pheasants disperse from their open-topped release pens and hence encounter novel predators and move away from artificial food provision. Pheasants that leave such safe release sites and fail to learn new foraging locations or refuges from predators are likely to be highly susceptible. We asked whether survival was predicted by a pheasant's early life performance in psychometric tests of learning and reversal, controlling for other non-cognitive factors such as sex and mass. Given the ambiguous relationship previously reported between an individual's speed of acquisition and reversal [13,25–29], we tested how performances in these two tasks were related to each other in pheasants. We then explored two mechanisms by which any such relationships between cognition and fitness may be mediated by their movement and exploration. As pheasants moved further away from their point of release (in a protected and provisioned pen—see below), they would encounter higher densities of predators and lower densities of artificial food supplies, and hence face an increased risk of predation or starvation. First, we tested how an individual's exploratory behaviour in a series of assays under controlled conditions when five weeks old correlated with their cognitive ability. Second, we tested how early life cognitive performance related to adult ranging behaviour after release.
The quick are the dead: pheasants that are slow to reverse a learned association survive for longer in the wild. Joah R. Madden, Ellis J. G. Langley, Mark A. Whiteside, Christine E. Beardsworth, Jayden O. van Horik. Philosophical Transactions of the Royal Society B: Biological Sciences, September 26 2018, Volume 373, issue 1756. http://rstb.royalsocietypublishing.org/content/373/1756/20170297
Abstract: Cognitive abilities probably evolve through natural selection if they provide individuals with fitness benefits. A growing number of studies demonstrate a positive relationship between performance in psychometric tasks and (proxy) measures of fitness. We assayed the performance of 154 common pheasant (Phasianus colchicus) chicks on tests of acquisition and reversal learning, using a different set of chicks and different set of cue types (spatial location and colour) in each of two years and then followed their fates after release into the wild. Across all birds, individuals that were slow to reverse previously learned associations were more likely to survive to four months old. For heavy birds, individuals that rapidly acquired an association had improved survival to four months, whereas for light birds, slow acquirers were more likely to be alive. Slow reversers also exhibited less exploratory behaviour in assays when five weeks old. Fast acquirers visited more artificial feeders after release. In contrast to most other studies, we showed that apparently ‘poor’ cognitive performance (slow reversal speed suggesting low behavioural flexibility) correlates with fitness benefits in at least some circumstances. This correlation suggests a novel mechanism by which continued exaggeration of cognitive abilities may be constrained.
---
1. Introduction
One powerful approach to understand how natural selection may act on cognition is to measure the performance of individuals in a particular cognitive domain, and then explore how their performance correlates with a (proxy) fitness measure [1,2]. This is achieved by deploying explicit psychometric tasks targeting specific, defined cognitive processes [3,4]. Because fitness itself is hard to measure [5], researchers tend to use proxies that are presumed to correspond to reproductive success and/or survival. This correlational approach has predominantly revealed a positive relationship between an individual's performance in the psychometric task and a (proxy) measure of their fitness. Ants Lasius niger that exhibited faster route learning had greater colony-level foraging success [6]. Male African striped mice (Rhabdomys pumilio) that escaped quickly from mazes also had increased probability of surviving to the breeding season [7]. Male guppies (Poecilia reticulata) that learned mazes quickly were preferred by females [8]. Male bitterling (Rhodeus ocellatus) (practising a ‘sneaker’ strategy) that exhibited better maze learning subsequently had higher reproductive success [9]. Male song sparrows (Melospiza melodia) that demonstrated better control in a detour-reaching task had a larger song repertoire [10]. Male starlings (Sturnus vulgaris) with better spatial learning exhibited longer song bouts [11]. One study of female Australian magpies (Cracticus tibicen dorsalis) reported a link between their reproductive success and a general factor summarizing their performance in a battery of four tasks [12]. By contrast, a study of spotted bowerbirds (Ptilonorhynchus maculatus) found no relationship between a male's mating success and his performance in a battery of six tasks, either individually or when his performance was summarized by a single component [13]. Only one study has reported a negative relationship: male song sparrows that were fast at spatial learning also had smaller song repertoires [14]. This implies that natural selection generally leads to more exaggerated cognitive performance and associated abilities.
Interpretation of these previous studies is complicated by three factors. First, in all cases except one [12], a single assay has been used for each cognitive process being investigated. Reliance on a single assay risks a misattribution of the mechanisms driving individual performance. For example, learning to discriminate between two colour cues may indicate the specific ability or inherent motivation to prefer one colour over another [3], rather than the more general ability to learn associatively. A more robust method would be to use two (or more) tests that assay the same putative cognitive mechanism but differ in format or cue uses and hence triangulate on the outcome (Volter et al. [15]). We considered two ubiquitous cognitive processes and tested each using two different test variants. Associative learning involves learning to associate a stimulus with a reward and may be tested using a binary discrimination. Reversal learning may be measured by the speed at which such a previously learned association can be reversed. Reversal learning is considered to indicate an individual's ability to exert executive, inhibitory control and thus be behaviourally flexible ([16,17] corvids (Gymnorhinus cyanocephalus, Nucifraga columbiana, Aphelocoma californica); but see also [18] humans). The processes have been linked to specific behaviours and fitness consequences. Associative learning performance determines adult foraging strategies ([19] sparrow, Passer domesticus) and rapid learning speeds enhance individual's foraging or reproductive success ([20,21] grasshopper, Schistocerca americana; wasp, Biosteres arisanus). Flexibility permits rapid switching between different optimal decisions in changeable environments [22] so that more behaviourally flexible individuals have improved invasion success ([23] Birds) or a better ability to track fluctuating social groups ([24] Primates). The two processes (associative learning and reversal learning) may be closely related to one another. In several other species, speeds of associative learning and reversal learning are negatively related ([25–27] myna, chickadee, scrub-jay (Aphelocoma coerulescens), red junglefowl (Gallus gallus)). However, this negative relationship is not inevitable ([13,28] bowerbird, robin (Petroica longipes)) and indeed may be positive [29] or moderated by another factor e.g. testosterone [25].
Second, previous studies have not attempted to explicitly test how performance in abstract cognitive tasks relates to specific behaviours upon which selection may act. For example, it is not clear how improved inhibitory control as revealed by performance in a detour task may relate to song-learning processes [10], or how the ability to navigate a maze manifests in improved mating success [9]. One possibility is that cognitive performances and natural behaviours are linked by an overarching personality, such that an individual's behaviour in one context (a cognitive task) is linked to their behaviour in another context [30,31]. Alternatively, a cognitive ability has an immediate link to a natural behaviour, independent of personality. For example, performance in maze learning may correspond to the methods by which an individual learns to navigate their environment and recall feeding and refuge locations. By explicitly testing how cognitive abilities relate to broader personality assays, or more specific behaviours likely to relate to fitness outcomes, we can better understand how selection may act on these abilities.
Finally, studies have either had to test wild individuals for whom prior experience, social ranking and/or age is unknown, or they have relied on laboratory systems where the putative fitness consequences are hard to relate to the natural world. Administering controlled psychometric tests to wild animals, in which a large, random and reasonably complete sample of individuals participate over a large number of repeated presentations is problematic [1–4]. One solution is to capture animals from the wild and take them into captivity where they can be tested before release back into the wild. This approach encounters two problems. First, capture may not be random [32], so that the sample tested is not representative of the wild population. Second, individuals may have undergone different prior experiences that could lead to biases or preferences (e.g. for a particular colour) developed in other contexts that skew their performance in tests [3]. Such problems may be overcome by testing captive-reared individuals where prior experiences can be controlled and participation ensured. However, captive animals are not subject to natural selective pressures because predators are excluded and resources are provided in excess, and hence robust and relevant fitness measures are difficult to collect. This may explain why previous studies have used proxy measures of fitness.
We made use of a unique study system, the common pheasant (Phasianus colchicus) (hereafter pheasants). In the UK, these birds can be reared in captivity from hatching and subsequently released into the wild (for hunting). This ensures that individuals all experience identical developmental trajectories and prior experiences, all can be tested under controlled conditions and, critically, after release can be subject to natural selective pressures in the wild, where their fates can be monitored. We reared pheasant chicks from hatching to 10 weeks under controlled conditions in 2014 and 2015, and during this time we could subject them to psychometric tests of acquisition and reversal learning [33]. We used two sets of tests of particular processes, specifically the acquisition and reversal of associations between cues and rewards, using two different task paradigms (one discriminating colours and the other discriminating spatial positions on the test apparatus), with one task paradigm used in each year, to improve our confidence that it was the cognitive process that we were measuring rather than simply response to one particular set of cues. Critically, we then released birds into the wild and followed their fates, using survival as an unambiguous indicator of their fitness. Pheasant survival may be affected by year [34,35], sex ([36,37], but see also [38]), mass ([39], but see also [40]) and interactions between them (e.g. [41]). Therefore, we considered these in conjunction with performances in the cognitive tests. Pheasant mortality is typically high, especially in early life when birds are first independent, due to both terrestrial and avian predators [41,42]. This mortality occurs when pheasants disperse from their open-topped release pens and hence encounter novel predators and move away from artificial food provision. Pheasants that leave such safe release sites and fail to learn new foraging locations or refuges from predators are likely to be highly susceptible. We asked whether survival was predicted by a pheasant's early life performance in psychometric tests of learning and reversal, controlling for other non-cognitive factors such as sex and mass. Given the ambiguous relationship previously reported between an individual's speed of acquisition and reversal [13,25–29], we tested how performances in these two tasks were related to each other in pheasants. We then explored two mechanisms by which any such relationships between cognition and fitness may be mediated by their movement and exploration. As pheasants moved further away from their point of release (in a protected and provisioned pen—see below), they would encounter higher densities of predators and lower densities of artificial food supplies, and hence face an increased risk of predation or starvation. First, we tested how an individual's exploratory behaviour in a series of assays under controlled conditions when five weeks old correlated with their cognitive ability. Second, we tested how early life cognitive performance related to adult ranging behaviour after release.
Abstract: Cognitive abilities probably evolve through natural selection if they provide individuals with fitness benefits. A growing number of studies demonstrate a positive relationship between performance in psychometric tasks and (proxy) measures of fitness. We assayed the performance of 154 common pheasant (Phasianus colchicus) chicks on tests of acquisition and reversal learning, using a different set of chicks and different set of cue types (spatial location and colour) in each of two years and then followed their fates after release into the wild. Across all birds, individuals that were slow to reverse previously learned associations were more likely to survive to four months old. For heavy birds, individuals that rapidly acquired an association had improved survival to four months, whereas for light birds, slow acquirers were more likely to be alive. Slow reversers also exhibited less exploratory behaviour in assays when five weeks old. Fast acquirers visited more artificial feeders after release. In contrast to most other studies, we showed that apparently ‘poor’ cognitive performance (slow reversal speed suggesting low behavioural flexibility) correlates with fitness benefits in at least some circumstances. This correlation suggests a novel mechanism by which continued exaggeration of cognitive abilities may be constrained.
---
1. Introduction
One powerful approach to understand how natural selection may act on cognition is to measure the performance of individuals in a particular cognitive domain, and then explore how their performance correlates with a (proxy) fitness measure [1,2]. This is achieved by deploying explicit psychometric tasks targeting specific, defined cognitive processes [3,4]. Because fitness itself is hard to measure [5], researchers tend to use proxies that are presumed to correspond to reproductive success and/or survival. This correlational approach has predominantly revealed a positive relationship between an individual's performance in the psychometric task and a (proxy) measure of their fitness. Ants Lasius niger that exhibited faster route learning had greater colony-level foraging success [6]. Male African striped mice (Rhabdomys pumilio) that escaped quickly from mazes also had increased probability of surviving to the breeding season [7]. Male guppies (Poecilia reticulata) that learned mazes quickly were preferred by females [8]. Male bitterling (Rhodeus ocellatus) (practising a ‘sneaker’ strategy) that exhibited better maze learning subsequently had higher reproductive success [9]. Male song sparrows (Melospiza melodia) that demonstrated better control in a detour-reaching task had a larger song repertoire [10]. Male starlings (Sturnus vulgaris) with better spatial learning exhibited longer song bouts [11]. One study of female Australian magpies (Cracticus tibicen dorsalis) reported a link between their reproductive success and a general factor summarizing their performance in a battery of four tasks [12]. By contrast, a study of spotted bowerbirds (Ptilonorhynchus maculatus) found no relationship between a male's mating success and his performance in a battery of six tasks, either individually or when his performance was summarized by a single component [13]. Only one study has reported a negative relationship: male song sparrows that were fast at spatial learning also had smaller song repertoires [14]. This implies that natural selection generally leads to more exaggerated cognitive performance and associated abilities.
Interpretation of these previous studies is complicated by three factors. First, in all cases except one [12], a single assay has been used for each cognitive process being investigated. Reliance on a single assay risks a misattribution of the mechanisms driving individual performance. For example, learning to discriminate between two colour cues may indicate the specific ability or inherent motivation to prefer one colour over another [3], rather than the more general ability to learn associatively. A more robust method would be to use two (or more) tests that assay the same putative cognitive mechanism but differ in format or cue uses and hence triangulate on the outcome (Volter et al. [15]). We considered two ubiquitous cognitive processes and tested each using two different test variants. Associative learning involves learning to associate a stimulus with a reward and may be tested using a binary discrimination. Reversal learning may be measured by the speed at which such a previously learned association can be reversed. Reversal learning is considered to indicate an individual's ability to exert executive, inhibitory control and thus be behaviourally flexible ([16,17] corvids (Gymnorhinus cyanocephalus, Nucifraga columbiana, Aphelocoma californica); but see also [18] humans). The processes have been linked to specific behaviours and fitness consequences. Associative learning performance determines adult foraging strategies ([19] sparrow, Passer domesticus) and rapid learning speeds enhance individual's foraging or reproductive success ([20,21] grasshopper, Schistocerca americana; wasp, Biosteres arisanus). Flexibility permits rapid switching between different optimal decisions in changeable environments [22] so that more behaviourally flexible individuals have improved invasion success ([23] Birds) or a better ability to track fluctuating social groups ([24] Primates). The two processes (associative learning and reversal learning) may be closely related to one another. In several other species, speeds of associative learning and reversal learning are negatively related ([25–27] myna, chickadee, scrub-jay (Aphelocoma coerulescens), red junglefowl (Gallus gallus)). However, this negative relationship is not inevitable ([13,28] bowerbird, robin (Petroica longipes)) and indeed may be positive [29] or moderated by another factor e.g. testosterone [25].
Second, previous studies have not attempted to explicitly test how performance in abstract cognitive tasks relates to specific behaviours upon which selection may act. For example, it is not clear how improved inhibitory control as revealed by performance in a detour task may relate to song-learning processes [10], or how the ability to navigate a maze manifests in improved mating success [9]. One possibility is that cognitive performances and natural behaviours are linked by an overarching personality, such that an individual's behaviour in one context (a cognitive task) is linked to their behaviour in another context [30,31]. Alternatively, a cognitive ability has an immediate link to a natural behaviour, independent of personality. For example, performance in maze learning may correspond to the methods by which an individual learns to navigate their environment and recall feeding and refuge locations. By explicitly testing how cognitive abilities relate to broader personality assays, or more specific behaviours likely to relate to fitness outcomes, we can better understand how selection may act on these abilities.
Finally, studies have either had to test wild individuals for whom prior experience, social ranking and/or age is unknown, or they have relied on laboratory systems where the putative fitness consequences are hard to relate to the natural world. Administering controlled psychometric tests to wild animals, in which a large, random and reasonably complete sample of individuals participate over a large number of repeated presentations is problematic [1–4]. One solution is to capture animals from the wild and take them into captivity where they can be tested before release back into the wild. This approach encounters two problems. First, capture may not be random [32], so that the sample tested is not representative of the wild population. Second, individuals may have undergone different prior experiences that could lead to biases or preferences (e.g. for a particular colour) developed in other contexts that skew their performance in tests [3]. Such problems may be overcome by testing captive-reared individuals where prior experiences can be controlled and participation ensured. However, captive animals are not subject to natural selective pressures because predators are excluded and resources are provided in excess, and hence robust and relevant fitness measures are difficult to collect. This may explain why previous studies have used proxy measures of fitness.
We made use of a unique study system, the common pheasant (Phasianus colchicus) (hereafter pheasants). In the UK, these birds can be reared in captivity from hatching and subsequently released into the wild (for hunting). This ensures that individuals all experience identical developmental trajectories and prior experiences, all can be tested under controlled conditions and, critically, after release can be subject to natural selective pressures in the wild, where their fates can be monitored. We reared pheasant chicks from hatching to 10 weeks under controlled conditions in 2014 and 2015, and during this time we could subject them to psychometric tests of acquisition and reversal learning [33]. We used two sets of tests of particular processes, specifically the acquisition and reversal of associations between cues and rewards, using two different task paradigms (one discriminating colours and the other discriminating spatial positions on the test apparatus), with one task paradigm used in each year, to improve our confidence that it was the cognitive process that we were measuring rather than simply response to one particular set of cues. Critically, we then released birds into the wild and followed their fates, using survival as an unambiguous indicator of their fitness. Pheasant survival may be affected by year [34,35], sex ([36,37], but see also [38]), mass ([39], but see also [40]) and interactions between them (e.g. [41]). Therefore, we considered these in conjunction with performances in the cognitive tests. Pheasant mortality is typically high, especially in early life when birds are first independent, due to both terrestrial and avian predators [41,42]. This mortality occurs when pheasants disperse from their open-topped release pens and hence encounter novel predators and move away from artificial food provision. Pheasants that leave such safe release sites and fail to learn new foraging locations or refuges from predators are likely to be highly susceptible. We asked whether survival was predicted by a pheasant's early life performance in psychometric tests of learning and reversal, controlling for other non-cognitive factors such as sex and mass. Given the ambiguous relationship previously reported between an individual's speed of acquisition and reversal [13,25–29], we tested how performances in these two tasks were related to each other in pheasants. We then explored two mechanisms by which any such relationships between cognition and fitness may be mediated by their movement and exploration. As pheasants moved further away from their point of release (in a protected and provisioned pen—see below), they would encounter higher densities of predators and lower densities of artificial food supplies, and hence face an increased risk of predation or starvation. First, we tested how an individual's exploratory behaviour in a series of assays under controlled conditions when five weeks old correlated with their cognitive ability. Second, we tested how early life cognitive performance related to adult ranging behaviour after release.
The quick are the dead: pheasants that are slow to reverse a learned association survive for longer in the wild. Joah R. Madden, Ellis J. G. Langley, Mark A. Whiteside, Christine E. Beardsworth, Jayden O. van Horik. Philosophical Transactions of the Royal Society B: Biological Sciences, September 26 2018, Volume 373, issue 1756. http://rstb.royalsocietypublishing.org/content/373/1756/20170297
Abstract: Cognitive abilities probably evolve through natural selection if they provide individuals with fitness benefits. A growing number of studies demonstrate a positive relationship between performance in psychometric tasks and (proxy) measures of fitness. We assayed the performance of 154 common pheasant (Phasianus colchicus) chicks on tests of acquisition and reversal learning, using a different set of chicks and different set of cue types (spatial location and colour) in each of two years and then followed their fates after release into the wild. Across all birds, individuals that were slow to reverse previously learned associations were more likely to survive to four months old. For heavy birds, individuals that rapidly acquired an association had improved survival to four months, whereas for light birds, slow acquirers were more likely to be alive. Slow reversers also exhibited less exploratory behaviour in assays when five weeks old. Fast acquirers visited more artificial feeders after release. In contrast to most other studies, we showed that apparently ‘poor’ cognitive performance (slow reversal speed suggesting low behavioural flexibility) correlates with fitness benefits in at least some circumstances. This correlation suggests a novel mechanism by which continued exaggeration of cognitive abilities may be constrained.
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1. Introduction
One powerful approach to understand how natural selection may act on cognition is to measure the performance of individuals in a particular cognitive domain, and then explore how their performance correlates with a (proxy) fitness measure [1,2]. This is achieved by deploying explicit psychometric tasks targeting specific, defined cognitive processes [3,4]. Because fitness itself is hard to measure [5], researchers tend to use proxies that are presumed to correspond to reproductive success and/or survival. This correlational approach has predominantly revealed a positive relationship between an individual's performance in the psychometric task and a (proxy) measure of their fitness. Ants Lasius niger that exhibited faster route learning had greater colony-level foraging success [6]. Male African striped mice (Rhabdomys pumilio) that escaped quickly from mazes also had increased probability of surviving to the breeding season [7]. Male guppies (Poecilia reticulata) that learned mazes quickly were preferred by females [8]. Male bitterling (Rhodeus ocellatus) (practising a ‘sneaker’ strategy) that exhibited better maze learning subsequently had higher reproductive success [9]. Male song sparrows (Melospiza melodia) that demonstrated better control in a detour-reaching task had a larger song repertoire [10]. Male starlings (Sturnus vulgaris) with better spatial learning exhibited longer song bouts [11]. One study of female Australian magpies (Cracticus tibicen dorsalis) reported a link between their reproductive success and a general factor summarizing their performance in a battery of four tasks [12]. By contrast, a study of spotted bowerbirds (Ptilonorhynchus maculatus) found no relationship between a male's mating success and his performance in a battery of six tasks, either individually or when his performance was summarized by a single component [13]. Only one study has reported a negative relationship: male song sparrows that were fast at spatial learning also had smaller song repertoires [14]. This implies that natural selection generally leads to more exaggerated cognitive performance and associated abilities.
Interpretation of these previous studies is complicated by three factors. First, in all cases except one [12], a single assay has been used for each cognitive process being investigated. Reliance on a single assay risks a misattribution of the mechanisms driving individual performance. For example, learning to discriminate between two colour cues may indicate the specific ability or inherent motivation to prefer one colour over another [3], rather than the more general ability to learn associatively. A more robust method would be to use two (or more) tests that assay the same putative cognitive mechanism but differ in format or cue uses and hence triangulate on the outcome (Volter et al. [15]). We considered two ubiquitous cognitive processes and tested each using two different test variants. Associative learning involves learning to associate a stimulus with a reward and may be tested using a binary discrimination. Reversal learning may be measured by the speed at which such a previously learned association can be reversed. Reversal learning is considered to indicate an individual's ability to exert executive, inhibitory control and thus be behaviourally flexible ([16,17] corvids (Gymnorhinus cyanocephalus, Nucifraga columbiana, Aphelocoma californica); but see also [18] humans). The processes have been linked to specific behaviours and fitness consequences. Associative learning performance determines adult foraging strategies ([19] sparrow, Passer domesticus) and rapid learning speeds enhance individual's foraging or reproductive success ([20,21] grasshopper, Schistocerca americana; wasp, Biosteres arisanus). Flexibility permits rapid switching between different optimal decisions in changeable environments [22] so that more behaviourally flexible individuals have improved invasion success ([23] Birds) or a better ability to track fluctuating social groups ([24] Primates). The two processes (associative learning and reversal learning) may be closely related to one another. In several other species, speeds of associative learning and reversal learning are negatively related ([25–27] myna, chickadee, scrub-jay (Aphelocoma coerulescens), red junglefowl (Gallus gallus)). However, this negative relationship is not inevitable ([13,28] bowerbird, robin (Petroica longipes)) and indeed may be positive [29] or moderated by another factor e.g. testosterone [25].
Second, previous studies have not attempted to explicitly test how performance in abstract cognitive tasks relates to specific behaviours upon which selection may act. For example, it is not clear how improved inhibitory control as revealed by performance in a detour task may relate to song-learning processes [10], or how the ability to navigate a maze manifests in improved mating success [9]. One possibility is that cognitive performances and natural behaviours are linked by an overarching personality, such that an individual's behaviour in one context (a cognitive task) is linked to their behaviour in another context [30,31]. Alternatively, a cognitive ability has an immediate link to a natural behaviour, independent of personality. For example, performance in maze learning may correspond to the methods by which an individual learns to navigate their environment and recall feeding and refuge locations. By explicitly testing how cognitive abilities relate to broader personality assays, or more specific behaviours likely to relate to fitness outcomes, we can better understand how selection may act on these abilities.
Finally, studies have either had to test wild individuals for whom prior experience, social ranking and/or age is unknown, or they have relied on laboratory systems where the putative fitness consequences are hard to relate to the natural world. Administering controlled psychometric tests to wild animals, in which a large, random and reasonably complete sample of individuals participate over a large number of repeated presentations is problematic [1–4]. One solution is to capture animals from the wild and take them into captivity where they can be tested before release back into the wild. This approach encounters two problems. First, capture may not be random [32], so that the sample tested is not representative of the wild population. Second, individuals may have undergone different prior experiences that could lead to biases or preferences (e.g. for a particular colour) developed in other contexts that skew their performance in tests [3]. Such problems may be overcome by testing captive-reared individuals where prior experiences can be controlled and participation ensured. However, captive animals are not subject to natural selective pressures because predators are excluded and resources are provided in excess, and hence robust and relevant fitness measures are difficult to collect. This may explain why previous studies have used proxy measures of fitness.
We made use of a unique study system, the common pheasant (Phasianus colchicus) (hereafter pheasants). In the UK, these birds can be reared in captivity from hatching and subsequently released into the wild (for hunting). This ensures that individuals all experience identical developmental trajectories and prior experiences, all can be tested under controlled conditions and, critically, after release can be subject to natural selective pressures in the wild, where their fates can be monitored. We reared pheasant chicks from hatching to 10 weeks under controlled conditions in 2014 and 2015, and during this time we could subject them to psychometric tests of acquisition and reversal learning [33]. We used two sets of tests of particular processes, specifically the acquisition and reversal of associations between cues and rewards, using two different task paradigms (one discriminating colours and the other discriminating spatial positions on the test apparatus), with one task paradigm used in each year, to improve our confidence that it was the cognitive process that we were measuring rather than simply response to one particular set of cues. Critically, we then released birds into the wild and followed their fates, using survival as an unambiguous indicator of their fitness. Pheasant survival may be affected by year [34,35], sex ([36,37], but see also [38]), mass ([39], but see also [40]) and interactions between them (e.g. [41]). Therefore, we considered these in conjunction with performances in the cognitive tests. Pheasant mortality is typically high, especially in early life when birds are first independent, due to both terrestrial and avian predators [41,42]. This mortality occurs when pheasants disperse from their open-topped release pens and hence encounter novel predators and move away from artificial food provision. Pheasants that leave such safe release sites and fail to learn new foraging locations or refuges from predators are likely to be highly susceptible. We asked whether survival was predicted by a pheasant's early life performance in psychometric tests of learning and reversal, controlling for other non-cognitive factors such as sex and mass. Given the ambiguous relationship previously reported between an individual's speed of acquisition and reversal [13,25–29], we tested how performances in these two tasks were related to each other in pheasants. We then explored two mechanisms by which any such relationships between cognition and fitness may be mediated by their movement and exploration. As pheasants moved further away from their point of release (in a protected and provisioned pen—see below), they would encounter higher densities of predators and lower densities of artificial food supplies, and hence face an increased risk of predation or starvation. First, we tested how an individual's exploratory behaviour in a series of assays under controlled conditions when five weeks old correlated with their cognitive ability. Second, we tested how early life cognitive performance related to adult ranging behaviour after release.
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