Rodríguez-Ferreiro, Javier, Itxaso Barberia, Jordi González-Guerra, and Miguel A. Vadillo. 2019. “Are We Truly Special and Unique? A Replication of Goldenberg Et Al. (2001).” PsyArXiv. November 7. doi:10.31234/osf.io/rcjz9
Abstract: According to the mortality salience hypothesis of terror management theory, reminders of our future death increase the necessity to validate our cultural worldview and to enhance our self-esteem. In Experiment 2 of the study “I am not an animal: Mortality salience, disgust, and the denial of human creatureliness”, Goldenberg et al. (2001) observed that participants primed with questions about their death provided more positive evaluations to an essay describing humans as distinct from animals than control participants presented with questions regarding another aversive situation. In a replication of this experiment conducted with 128 volunteers, we did not observe evidence for a mortality salience effect.
Discussion
Overall, the pattern of results reported in the previous section are inconsistent with
the original results of Goldenberg et al. (2001). This does not necessarily mean that the
original effect was a false positive, but it does suggest that (a) the effect may be
substantially smaller than originally reported or (b) that the effect is extremely sensitive to
contextual factors and perhaps absent in some populations. Consistent with the former
interpretation, our own reanalysis of Burke et al. (2010; see also Yen & Cheng, 2013)
provides compelling evidence that the effect sizes of previous research on mortality
salience may have been overestimated.
But, of course, it is possible that our experiment simply failed to recreate the ideal
conditions for the emergence of the mortality salience effect reported by Goldenberg et al.
(2001). Failed replications of prominent social psychology studies have often been
attributed to the contextual sensitivity of the processes involved in these effects (e.g.,
Cesario, 2014; Sundie, Beal, Neuberg, & Kenrick, 2019; Van Bavel, Mende-Siedlecki,
Brady, & Reinero, 2016). For instance, reviewers of an earlier version of this article
suggested that perhaps Spanish participants (1) do not care so much about uniqueness and
free will, (2) do not care about distancing themselves as much from animals as Americans,
(3) do not fear death as much as Americans. Although none of these possibilities can be
discarded conclusively on the basis of the present data, we deem them unlikely. Visual
inspection of Figure 2 shows that the distribution of the ratings provided by our
participants are in almost perfect agreement with the ratings provided by the control group
in the original study by Goldenberg et al. (M = 5.80, SD = 1.36). This provides little
support to the idea that our essays did not resonate with these participants in the same
manner as they did with participants in the original study.
Of course, our study is not without limitations. Neither our empirical study nor our
reanalysis of the data reported by Burke et al. (2010) were pre-registered, failing to meet
the highest standards of confirmatory research. In contrast, we do offer public access to our
complete data set and invite skeptical readers to test alternative hypotheses that we may
have overlooked and that perhaps may provide stronger support for the mortality salience
hypothesis. Similarly, although the sample size recruited for the present study (N = 128)
was substantially larger than the sample size of the original study (N = 20, in the same two
conditions), given the evidence of bias that we detected in the literature, it might have been
wise to power our study for a substantially smaller effect size, perhaps around r = .22, for
consistency with the bias-corrected average effect returned by the selection model.
In any case, we think that given the theoretical relevance of this effect, it is worth
investing more time and resources in establishing its reliability and boundary conditions.
We hope that the present work will provide some initial momentum for further replication
studies on terror management theory and the mortality salience hypothesis.
Thursday, November 7, 2019
Evidence points to a possible association between optimism and the placebo response
The influence of personality traits on the placebo/nocebo response: A systematic review. Alexandra Kern et al. Journal of Psychosomatic Research, November 7 2019, 109866. https://doi.org/10.1016/j.jpsychores.2019.109866
Highlights
• Results on the influence of personality traits on placebo responses are heterogeneous.
• More studies are available on the influence of personality traits on the placebo response than on the nocebo response.
• Optimism seems to be positively associated with placebo responses.
• Anxiety might lead to increased nocebo responses.
Abstract
Objective: Some people might be more prone to placebo and nocebo responses than others depending on their personality traits. We aimed to provide a systematic review on the influence of personality traits on placebo and nocebo responses in controlled and uncontrolled studies.
Methods: We conducted a systematic literature search in the databases CINAHL, AMED, PsycINFO and EMBASE for relevant publications published between January 1997 and March 2018. For all included papers, we conducted an additional forward search.
Results: After screening 407 references, we identified 24 studies. The Big Five (i.e., neuroticism, extraversion, openness to experience, agreeableness and conscientiousness) and optimism were the most frequently investigated personality traits. Several studies found a positive association between optimism and the placebo response. Furthermore, we found that higher anxiety was associated with increased nocebo responses.
Conclusion: Evidence points to a possible association between optimism and the placebo response. Therefore, further emphasising the investigation of the influence of optimism on the placebo/nocebo response seems warranted. For clinical practice, the impact of anxiety on the nocebo response might be important to identify patients who might be more prone to experiencing side effects of medical treatments.
Keywords: Nocebo responsePersonalityPlacebo responseSystematic review
Highlights
• Results on the influence of personality traits on placebo responses are heterogeneous.
• More studies are available on the influence of personality traits on the placebo response than on the nocebo response.
• Optimism seems to be positively associated with placebo responses.
• Anxiety might lead to increased nocebo responses.
Abstract
Objective: Some people might be more prone to placebo and nocebo responses than others depending on their personality traits. We aimed to provide a systematic review on the influence of personality traits on placebo and nocebo responses in controlled and uncontrolled studies.
Methods: We conducted a systematic literature search in the databases CINAHL, AMED, PsycINFO and EMBASE for relevant publications published between January 1997 and March 2018. For all included papers, we conducted an additional forward search.
Results: After screening 407 references, we identified 24 studies. The Big Five (i.e., neuroticism, extraversion, openness to experience, agreeableness and conscientiousness) and optimism were the most frequently investigated personality traits. Several studies found a positive association between optimism and the placebo response. Furthermore, we found that higher anxiety was associated with increased nocebo responses.
Conclusion: Evidence points to a possible association between optimism and the placebo response. Therefore, further emphasising the investigation of the influence of optimism on the placebo/nocebo response seems warranted. For clinical practice, the impact of anxiety on the nocebo response might be important to identify patients who might be more prone to experiencing side effects of medical treatments.
Keywords: Nocebo responsePersonalityPlacebo responseSystematic review
State & private schoolers have no differences in wellbeing across adolescence; private schoolers have fewer behavior problems, more peer victimization, less risk aversion & drink sooner
von Stumm, Sophie, and Robert Plomin. 2019. “Does Private Education Make Nicer People? the Influence of School Type on Socioemotional Development.” PsyArXiv. November 7. doi:10.31234/osf.io/73gzd
Abstract
In a longitudinal sample from Britain, we tested if attending private, fee-charging schools rather than non-selective state schools benefitted children’s socioemotional development.
State (N = 2,413) and private school children (N = 269) showed no differences in wellbeing across adolescence, but private school children reported fewer behavior problems and greater peer victimization over time than state schoolers. These results were independent of schools’ selection criteria, including family background, and prior academic and cognitive performance.
At age 21, private and state school students differed marginally in socioemotional competencies, such as self-control, volunteering, sexual behaviors, and substance use. After considering schools’ selection criteria, only risk taking and age at the first alcoholic drink differed between private and state school children, with the privately educated being less risk averse and drinking at younger ages than those attending state school.
Our results suggest that private education adds little positive value to children’s socioemotional development.
Abstract
In a longitudinal sample from Britain, we tested if attending private, fee-charging schools rather than non-selective state schools benefitted children’s socioemotional development.
State (N = 2,413) and private school children (N = 269) showed no differences in wellbeing across adolescence, but private school children reported fewer behavior problems and greater peer victimization over time than state schoolers. These results were independent of schools’ selection criteria, including family background, and prior academic and cognitive performance.
At age 21, private and state school students differed marginally in socioemotional competencies, such as self-control, volunteering, sexual behaviors, and substance use. After considering schools’ selection criteria, only risk taking and age at the first alcoholic drink differed between private and state school children, with the privately educated being less risk averse and drinking at younger ages than those attending state school.
Our results suggest that private education adds little positive value to children’s socioemotional development.
PhD thesis: A comparative study of the lived experiences of female sex workers in Scotland and New Zealand
Ryan, Anastacia Elle (2019) The sanctions of justice: a comparative study of the lived experiences of female sex workers in Scotland and New Zealand. PhD thesis. https://theses.gla.ac.uk/41136
Abstract
Female sex workers have become marked as women in transgression, viewed as bad or fallen, depending on thediscourse applied to the wider institution of prostitution. Bad women, if motivated to sell sexual services by self-interest, and fallen women, if prey to malicious male violence and abuse. Be they agents or victims, the construction of female sex workersin the public imagination is enmeshed with historical, political and social anxiety related to women’s transgression from appropriate norms of femininity, sexuality and good citizenship. Female sex workers are distinguished from “virtuous women” by the associated stigma of being a “whore”. Furthermore, political functions of the whore stigma serve to render female sex workers as “othered” and thus, they face oppression globally, yet disavow governance responsibilities for the injustices they face. In the advanced capitalist society, a whole range of liberties can be seen to be rendered as incompatible with female legitimacy.
This thesis examines how the historical, social and political meanings attached to prostitution/sex work affect the practices of governance in this area, inquiring into their implications for sex work policy, and their effects on sex working women’s lives in the comparative legal settings of Scotland and New Zealand. The overarching research aim driving this thesis is: to compare ways in which sex work laws, policies and frameworks in Scotland and New Zealand enable or constrain sex workers’ access to justice. This thesis adopts a participatory feminist methodological approach that centers women’s voices and experiences in addressing theresearch aims, in the endeavor to engage with social justice as both a task and a process.
Tasked with the desire to facilitate subjective accounts of women’s experiences, an overall qualitative approach to collating and analysing data was taken, with in-depth narrative style interviews and ethnographic-informed fieldwork observations being utilised to seek women’s own understandings of their lived experiences. To gain additional context to these experiences, semi-structured interviews were also conducted with key informants, identified as being people whose everyday work involved a translation of policy to practice and an operalisation in some sense of the laws and policies on sex work in each context. Fieldwork took place over a twelve-month period between the comparative contexts of New Zealand (mainly Wellington and Auckland) and Scotland (mainly Edinburgh and Glasgow). No fixed geographical boundaries were put in place in the research in acknowledgement of the transient and often mobile nature of women’s work in the sex industry. Sampling strategies were tailored to each research context, with the intention to reach women who were involved or in contact with local services and collectives and also women who were not in contact with such possible gatekeeping organisations. Thus, a sampling through gatekeepers alongside a snowball sampling technique arose in both contexts, with the later proving more effective in Scotland where a quasi-criminalised legal framework was found to make female sex workers work in more hidden and clandestine ways.
Over the five months spent in New Zealand, thirteen interviews with sex workers were conducted (with four repeated during follow up interviews), two interviews with managers and three interviews with those involved in the provision of service to sex workers. Additionally, over 150 hours of observation was collected in field notes, which ranged from time spent in the base of the New Zealand Prostitutes Collective (NZPC), time spent accompanying NZPC workers to outreach, collecting litter, such as used prevention commodities and their packaging, from the street, meeting with other agencies and organisations, and spending time in a sex working premise with sex workers and management. In Scotland, twelve sex workers were interviewed, of which three were interviewed for a second time. Six sex workers were approached through the national Charity, SCOT-PEP, and three were approached through the social media advertisement of other sex workers who were involved in the formation of Umbrella Lane. Three sex working women were recruited through charity outreach to a sex working premise, and around 150 hours of ethnographic-informed observational field notes were recorded from online forums, during face-to-face sex worker meetings, in organizing spaces, and in a sex workpremise.
The material effects of the comparative laws and policies on sex work on women’s lived experiences in Scotland and New Zealand were explored through thematic analysis of the data collated. Emergent themes of agency, risk, engagement, stigma and violence allowed for these experiences to form the basis of a critical analysis of structural forces at play. This impacted on women’s entry into sex work, occupational health and safety, sex workers engagement with health and other support services, experiences of stigma, and recourse to justice in cases of violence. Whilst the legal frameworks were not the only structural factor at play, decriminalization was experienced to enhance women’s agency and autonomy in their choosing of how to do sex work, with a prioritisation of their safety being supported by occupational health and safety (OHS) frameworks in place. These OHS frameworks also enabled the New Zealand based participants to minimize perceived risks to their safety, and further provisions in the Prostitution Reform Act allowed sex workers to access justice in cases where their rights were violated concretely through exploitation, abuse or violence, and more subtely in their development of resilience and resistanceto stigma. Furthermore, women in New Zealand felt empowered to access essential support services extending beyond basic harm reduction services. In Scotland, under a somewhat paradoxical setting whereby the legal framework criminalises the way sex workerswork, alongside a policy context that pivots on an understanding of prostitution as commercial sexual exploitation, women experienced less agency than their New Zealand counterparts in choosing how and where to work, increasing their risk to exploitative working conditions and violence, as their priotisation of avoiding state attention and criminalisation was experienced to override their safety concerns and yet felt comparatively more stigmatised and marginalised from services, including health, social and justice based service provision.
By reading empirical research with comparative policy, law and theory, this thesis contributes to the development of an ‘agenda for change’ for sex workers (McGarry and Fitzgerald, 2018). Such an agenda promotes a paradigm shift in rethinking the relationship between knowledge, discourse, and legal and policy governance, to explore women’s lived experiences in relation to social justice. By making visible the injustices enacted and perpetuated towards women, in this study, and assessing the role of the legal and policy frameworks in supporting, subverting or interrupting injustice and oppression of female sex workers, a politics of justice is envisaged in conclusions that make pertinent three points.Firstly, the urgent need for engagement with the New Zealand Model of decriminalisation of sex work as a task of promoting a politics of recognition to enable female sex workers the institutional rights necessary to minimise their occupational health and safety risks and enhance their access to formal justice in cases of exploitation, abuse and violence. Secondly, the required task for the development of a politics of redistribution in both comparative contexts that renders visible the structural injustices faced by femalesex workers by prioritising the facilitation of sex working women’s’ voices and experiences, in such justice claims, to avoid misrepresentation and misframing of these economic injustice concerns, which appear to dominate current redistribution justice understandings in the Scottish context. And finally, a renewed commitment of status equality to sex working women in policy frameworks that allows for social justice concerns. The exploration of women’s economic, political and social vulnerability to influence discourse, and subsequent policy objectives that are not causing further harm, marginalisation and exclusion of sex workers from vital support services and legal recourse to justice as further evidenced in the Scottish context.
Abstract
Female sex workers have become marked as women in transgression, viewed as bad or fallen, depending on thediscourse applied to the wider institution of prostitution. Bad women, if motivated to sell sexual services by self-interest, and fallen women, if prey to malicious male violence and abuse. Be they agents or victims, the construction of female sex workersin the public imagination is enmeshed with historical, political and social anxiety related to women’s transgression from appropriate norms of femininity, sexuality and good citizenship. Female sex workers are distinguished from “virtuous women” by the associated stigma of being a “whore”. Furthermore, political functions of the whore stigma serve to render female sex workers as “othered” and thus, they face oppression globally, yet disavow governance responsibilities for the injustices they face. In the advanced capitalist society, a whole range of liberties can be seen to be rendered as incompatible with female legitimacy.
This thesis examines how the historical, social and political meanings attached to prostitution/sex work affect the practices of governance in this area, inquiring into their implications for sex work policy, and their effects on sex working women’s lives in the comparative legal settings of Scotland and New Zealand. The overarching research aim driving this thesis is: to compare ways in which sex work laws, policies and frameworks in Scotland and New Zealand enable or constrain sex workers’ access to justice. This thesis adopts a participatory feminist methodological approach that centers women’s voices and experiences in addressing theresearch aims, in the endeavor to engage with social justice as both a task and a process.
Tasked with the desire to facilitate subjective accounts of women’s experiences, an overall qualitative approach to collating and analysing data was taken, with in-depth narrative style interviews and ethnographic-informed fieldwork observations being utilised to seek women’s own understandings of their lived experiences. To gain additional context to these experiences, semi-structured interviews were also conducted with key informants, identified as being people whose everyday work involved a translation of policy to practice and an operalisation in some sense of the laws and policies on sex work in each context. Fieldwork took place over a twelve-month period between the comparative contexts of New Zealand (mainly Wellington and Auckland) and Scotland (mainly Edinburgh and Glasgow). No fixed geographical boundaries were put in place in the research in acknowledgement of the transient and often mobile nature of women’s work in the sex industry. Sampling strategies were tailored to each research context, with the intention to reach women who were involved or in contact with local services and collectives and also women who were not in contact with such possible gatekeeping organisations. Thus, a sampling through gatekeepers alongside a snowball sampling technique arose in both contexts, with the later proving more effective in Scotland where a quasi-criminalised legal framework was found to make female sex workers work in more hidden and clandestine ways.
Over the five months spent in New Zealand, thirteen interviews with sex workers were conducted (with four repeated during follow up interviews), two interviews with managers and three interviews with those involved in the provision of service to sex workers. Additionally, over 150 hours of observation was collected in field notes, which ranged from time spent in the base of the New Zealand Prostitutes Collective (NZPC), time spent accompanying NZPC workers to outreach, collecting litter, such as used prevention commodities and their packaging, from the street, meeting with other agencies and organisations, and spending time in a sex working premise with sex workers and management. In Scotland, twelve sex workers were interviewed, of which three were interviewed for a second time. Six sex workers were approached through the national Charity, SCOT-PEP, and three were approached through the social media advertisement of other sex workers who were involved in the formation of Umbrella Lane. Three sex working women were recruited through charity outreach to a sex working premise, and around 150 hours of ethnographic-informed observational field notes were recorded from online forums, during face-to-face sex worker meetings, in organizing spaces, and in a sex workpremise.
The material effects of the comparative laws and policies on sex work on women’s lived experiences in Scotland and New Zealand were explored through thematic analysis of the data collated. Emergent themes of agency, risk, engagement, stigma and violence allowed for these experiences to form the basis of a critical analysis of structural forces at play. This impacted on women’s entry into sex work, occupational health and safety, sex workers engagement with health and other support services, experiences of stigma, and recourse to justice in cases of violence. Whilst the legal frameworks were not the only structural factor at play, decriminalization was experienced to enhance women’s agency and autonomy in their choosing of how to do sex work, with a prioritisation of their safety being supported by occupational health and safety (OHS) frameworks in place. These OHS frameworks also enabled the New Zealand based participants to minimize perceived risks to their safety, and further provisions in the Prostitution Reform Act allowed sex workers to access justice in cases where their rights were violated concretely through exploitation, abuse or violence, and more subtely in their development of resilience and resistanceto stigma. Furthermore, women in New Zealand felt empowered to access essential support services extending beyond basic harm reduction services. In Scotland, under a somewhat paradoxical setting whereby the legal framework criminalises the way sex workerswork, alongside a policy context that pivots on an understanding of prostitution as commercial sexual exploitation, women experienced less agency than their New Zealand counterparts in choosing how and where to work, increasing their risk to exploitative working conditions and violence, as their priotisation of avoiding state attention and criminalisation was experienced to override their safety concerns and yet felt comparatively more stigmatised and marginalised from services, including health, social and justice based service provision.
By reading empirical research with comparative policy, law and theory, this thesis contributes to the development of an ‘agenda for change’ for sex workers (McGarry and Fitzgerald, 2018). Such an agenda promotes a paradigm shift in rethinking the relationship between knowledge, discourse, and legal and policy governance, to explore women’s lived experiences in relation to social justice. By making visible the injustices enacted and perpetuated towards women, in this study, and assessing the role of the legal and policy frameworks in supporting, subverting or interrupting injustice and oppression of female sex workers, a politics of justice is envisaged in conclusions that make pertinent three points.Firstly, the urgent need for engagement with the New Zealand Model of decriminalisation of sex work as a task of promoting a politics of recognition to enable female sex workers the institutional rights necessary to minimise their occupational health and safety risks and enhance their access to formal justice in cases of exploitation, abuse and violence. Secondly, the required task for the development of a politics of redistribution in both comparative contexts that renders visible the structural injustices faced by femalesex workers by prioritising the facilitation of sex working women’s’ voices and experiences, in such justice claims, to avoid misrepresentation and misframing of these economic injustice concerns, which appear to dominate current redistribution justice understandings in the Scottish context. And finally, a renewed commitment of status equality to sex working women in policy frameworks that allows for social justice concerns. The exploration of women’s economic, political and social vulnerability to influence discourse, and subsequent policy objectives that are not causing further harm, marginalisation and exclusion of sex workers from vital support services and legal recourse to justice as further evidenced in the Scottish context.
Processing speed for deservingness-relevant info is greater than deservingness-irrelevant info; the construct of deservingness is central in human social relations, as if we evolved to have embedded gauges that measure justice
Evidence of a Processing Advantage for Deservingness-Relevant Information. Carolyn L. Hafer et al. Social Psychology, October 7, 2019. https://doi.org/10.1027/1864-9335/a000396
Abstract. We investigated processing speed for deservingness-relevant versus deservingness-irrelevant information. Female students read stories involving deserved, undeserved, or neutral outcomes. We recorded participants’ reaction time (RT) in processing the outcomes. We also measured individual differences in “belief in a just world” as a proxy for deservingness schematicity. RTs for deserved and undeserved outcomes were faster than for neutral outcomes, B = −8.45, p = .011, an effect that increased the stronger the belief in a just world (e.g., B = −3.18, p = .006). These findings provide novel evidence that the construct of deservingness is central in human social relations, and suggest both universal and particularistic schemas for deservingness.
Keywords: deservingness, processing speed, reaction time, schema, belief in a just world
RT = reaction time
BJW= belief in a just world
Hypothesis 1 (H1): Deservingness-relevant information will be processed faster than deservingness-irrelevant information.
Hypothesis 2 (H2): As BJW increases, the greater the processing advantage for deservingness-relevant information.
Discussion
We examined processing speed for deservingness-relevant information. Supporting H1, participants processed deservingness-relevant information faster than deservingness-irrelevant information. This novel finding converges with previous research (e.g., Feather, 1999; Lerner, 1977; Price & Brosnan, 2012) to suggest that people have a concern with deservingness that is deeply ingrained. Supporting H2, the stronger participants’ BJW, the greater the processing advantage for deservingness-relevant information. Thus, deservingness appears to be more central for some individuals.
Affective priming (Fazio, Sanbonmatsu, Powell,& Kardes, 1986) cannot account for our findings. The deserved and neutral outcomes followed a stimulus (i.e., the protagonist’s behavior) of the same valence, whereas the undeserved outcomes involved stimuli (behavior and outcome) with mismatching valences. Yet, RTs to deserved versus undeserved outcomes did not differ (contrary to affective priming predictions). Furthermore, if affective priming were the mechanism, RTs for deserved/undeserved outcomes would not be faster than for neutral outcomes. Our findings have several implications. First, if people rapidly process deservingness-relevant information, they can quickly make judgments and act based on that information. Rapid responses to quickly processed deservingnessrelevant information are not always beneficial. For example, peoplemight automatically dismiss a potential human rights abuse based on quick processing of information implying the individual deserves severe treatment (see Drolet et al., 2016), while failing to consider more appropriate information that takes longer to process.
Second, support for H1 suggests that there is a universal schema, as well as a particularistic schema that is characteristic of people with a strong BJW (see Markus, Hamill, & Sentis, 1987). A universal deservingness schema is consistent with the justice motive theory and evolutionary perspectives noted earlier.
We presume our findings would generalize beyond female university students, given evidence that deservingness is central to people in general (see Hafer, 2011). However, researchers should test our hypotheses with other groups of people.
Unfortunately, our memory items were not designed to test schema-driven recall. Researchers should test whether a strong BJW acts as a schema by biasing memory (see Callan, Kay, Davidenko, & Ellard, 2009), as well as the mechanism underlying deservingness schematicity (e.g., construct accessibility or importance, richness of cognitive structures, etc.; see Ruble & Stangor, 1986). Furthermore, aside from people with a strong BJW, researchers should test whether people with a strong belief that people get what is undeserved are also particularly schematic for deservingness.
In conclusion, we found evidence that people, especially those with a strong BJW, show a processing advantage for deservingness-relevant versus deservingness–irrelevant information. These findings add novel support to the idea that the construct of deservingness is central in human social relations.
Electronic Supplementary Material: https://doi.org/10.1027/1864-9335/a000396
ESM 1. Details on Mixed Models Analyses
Our main finding is that height does have a strong positive effect on life satisfaction
Height and life satisfaction: Evidence from 27 nations. Nazim Habibov, Rong Luo, Alena Auchynnikava, Lida Fan. American Journal of Human Biology, November 6 2019. https://doi.org/10.1002/ajhb.23351
Abstract
Objectives: To evaluate the effect of height on life satisfaction.
Methods: We use data from a recent multi‐country survey that was conducted in 27 nations.
Results: Our main finding is that height does have a strong positive effect on life satisfaction. These findings remain positive and significant when we use a comprehensive set of well‐known covariates of life‐satisfaction at both the individual and country levels. These findings also remain robust to alternative statistical specifications.
Conclusions: From a theoretical standpoint, our findings suggest that height is important in explaining life‐satisfaction independent of other well‐known determinants. From a methodological standpoint, the findings of this study highlight the need to explicitly control for the effect of heights in studies on subjective well‐being, happiness, and life‐satisfaction.
---
5 | CONCLUSION
Recent developments in the literature have highlighted the important role that height plays in explaining life satisfac-tion. However, despite the strong theoretical underpinnings of a positive height effect on life satisfaction, surprisingly few studies have attempted to confirm the positive influence of height on life satisfaction, especially outside of developed countries. In the light of this evidence, the present study evaluates the effect of height on life satisfaction in 27 post-communist nations.
Our main finding is that height indeed does have a positive effect on life satisfaction. This finding remains significant when we use a comprehensive set of well-known covariates of life-satisfaction at both the individual and country levels. These findings also remain robust to alternative statistical specifications. We also found that greater height is associated with higher levels of satisfaction with one's financial situation, although the effect of height on job satisfaction is not significant. However, we found that the magnitude of the height effect is lower when compared with well-known covariates of life-satisfaction at the individual level such as health, age, income, education, and marital status. Likewise, the magnitude of the height effect is lower than well-known covariates of life-satisfaction at the country level as well as GDP growth, poverty level, economic freedom, social transfers to population, and democracy level.
The empirical findings discussed above have theoretical and methodological implications. From the theoretical stand-point, our findings suggest that lack of investments into high quality nutrition, hygiene, health, education, and positive environmental conditions prevent some children from attaining their full potential height. Not reaching full height will then be translated into poorer health, emotional, reproductive, educational, and labor market outcomes. In turn, these factors are responsible for the lower levels of life evaluation provided by shorter people. From the methodological stand-point, the findings of this study highlight the need to explicitly control for the effect of heights in studies on subjective well-being, happiness, and life-satisfaction. However, a number of limitations should be mentioned. Small country samples prevent us from conducting country-by-country analysis to uncover variations in the height effect across countries. In addition, even though we used a comprehensive set of control variables, we were not able to control for abilities due to limitations in our data set. Hence, we were not able to fully overcome the omitted variable problem inasmuch as cognitive and non-cognitive abilities could be correlated with both height and life-satisfaction. Future studies should focus on country differences in the height to life satisfaction effect by controlling for abilities. In addition, comparing the height to life satisfaction effect across developed, post-communist, and developing countries could provide another promising line of enquiry.
Abstract
Objectives: To evaluate the effect of height on life satisfaction.
Methods: We use data from a recent multi‐country survey that was conducted in 27 nations.
Results: Our main finding is that height does have a strong positive effect on life satisfaction. These findings remain positive and significant when we use a comprehensive set of well‐known covariates of life‐satisfaction at both the individual and country levels. These findings also remain robust to alternative statistical specifications.
Conclusions: From a theoretical standpoint, our findings suggest that height is important in explaining life‐satisfaction independent of other well‐known determinants. From a methodological standpoint, the findings of this study highlight the need to explicitly control for the effect of heights in studies on subjective well‐being, happiness, and life‐satisfaction.
---
5 | CONCLUSION
Recent developments in the literature have highlighted the important role that height plays in explaining life satisfac-tion. However, despite the strong theoretical underpinnings of a positive height effect on life satisfaction, surprisingly few studies have attempted to confirm the positive influence of height on life satisfaction, especially outside of developed countries. In the light of this evidence, the present study evaluates the effect of height on life satisfaction in 27 post-communist nations.
Our main finding is that height indeed does have a positive effect on life satisfaction. This finding remains significant when we use a comprehensive set of well-known covariates of life-satisfaction at both the individual and country levels. These findings also remain robust to alternative statistical specifications. We also found that greater height is associated with higher levels of satisfaction with one's financial situation, although the effect of height on job satisfaction is not significant. However, we found that the magnitude of the height effect is lower when compared with well-known covariates of life-satisfaction at the individual level such as health, age, income, education, and marital status. Likewise, the magnitude of the height effect is lower than well-known covariates of life-satisfaction at the country level as well as GDP growth, poverty level, economic freedom, social transfers to population, and democracy level.
The empirical findings discussed above have theoretical and methodological implications. From the theoretical stand-point, our findings suggest that lack of investments into high quality nutrition, hygiene, health, education, and positive environmental conditions prevent some children from attaining their full potential height. Not reaching full height will then be translated into poorer health, emotional, reproductive, educational, and labor market outcomes. In turn, these factors are responsible for the lower levels of life evaluation provided by shorter people. From the methodological stand-point, the findings of this study highlight the need to explicitly control for the effect of heights in studies on subjective well-being, happiness, and life-satisfaction. However, a number of limitations should be mentioned. Small country samples prevent us from conducting country-by-country analysis to uncover variations in the height effect across countries. In addition, even though we used a comprehensive set of control variables, we were not able to control for abilities due to limitations in our data set. Hence, we were not able to fully overcome the omitted variable problem inasmuch as cognitive and non-cognitive abilities could be correlated with both height and life-satisfaction. Future studies should focus on country differences in the height to life satisfaction effect by controlling for abilities. In addition, comparing the height to life satisfaction effect across developed, post-communist, and developing countries could provide another promising line of enquiry.
Associations of "positive" temperament and personality traits with frequency of physical activity in adulthood: The nicer they were, the more they exercised
Associations of temperament and personality traits with frequency of physical activity in adulthood. Jenni Karvonen et al. Journal of Research in Personality, November 7 2019, 103887. https://doi.org/10.1016/j.jrp.2019.103887
Highlights
• Both temperament and personality traits are associated with adult physical activity.
• Different traits are related to physical activity engagement among women and men.
• Temperament and personality traits relate to rambling in nature and watching sports.
• Combinations of temperament and personality characteristics need further research.
Abstract: Temperament and physical activity (PA) have been examined in children and adolescents, but little is known about these associations in adulthood. Personality traits, however, are known to contribute to PA in adults. This study, which examined both temperament and personality characteristics at age 42 in relation to frequency of PA at age 50 (JYLS, n = 214-261), also found associations with temperament traits. Positive associations were found between Orienting sensitivity and overall PA and between Extraversion and vigorous PA among women and between low Negative affectivity and overall and vigorous PA among men. Furthermore, Orienting sensitivity and Agreeableness were associated with vigorous PA among men. Temperament and personality characteristics also showed gender-specific associations with rambling in nature and watching sports.
3.4 Discussion
The present study investigated the associations of temperament and personality characteristics,
assessed at age 42, with frequency of engagement in physical activity, assessed at age 50,
among Finnish women and men. Our main findings for the temperament traits were as follows:
(1) Orienting sensitivity showed a positive association with overall physical activity
engagement among women, and with vigorous physical activity engagement and an increased
likelihood of frequent rambling in nature among men. As expected, (2) Negative affectivity
was found to be negatively associated with both overall as well as vigorous physical activity
engagement, but only among men, meaning that men who scored lower in Negative affectivity
were more likely to engage in both overall and vigorous physical activity. In support of this,
men who scored high in Negative affectivity were more likely to watch sports frequently,
which, in this study, was seen to reflect physical inactivity. However, alternative
interpretations, such as the view that watching sports reflects an interest in other people’s
physical activity, are possible, and thus our results suggest that Negative affectivity is
associated with higher physical inactivity but also with interest in sports. Lastly, (3) Surgency
was negatively associated with rambling in nature among women.
Due to the novelty of the present observations for adult temperament, we can only speculate as
to their reasons. It is possible that awareness of extraneous low intensity stimulation, which
characterizes individuals who score high in Orienting sensitivity (Evans & Rothbart, 2007),
leads these individuals to experience physical activity-related physical responses as particularly
pleasant or satisfying, which in turn encourages them to exercise more frequently. Similarly,
the positive association observed here between Orienting sensitivity and rambling in nature
among men may stem from their conscious awareness of their surroundings and its visual
features. Evans and Rothbart (2007) characterize individuals with high levels of Surgency as
needing high levels of strength, complexity or novelty of arousal. This may help to explain
why, among the present women, those with high Surgency scores showed reduced willingness
to ramble in nature, as this type of physical activity does not provide them with adequate
stimuli. Our observation of the negative association between Negative affectivity and overall
and vigorous engagement in physical activity is in line with our study hypothesis. However, as
sports can be watched either individually or in the company of a larger group of people, we are
unable to provide confirmation for our hypothesis that Negative affectivity is positively
associated with, in particular, individually performed exercise types. Some explanation for the
negative association between Negative affectivity and physical activity engagement may be
gained from the general characterization of individuals who score high in Negative affectivity:
these individuals are prone to negative emotional states, such as anxiousness and selfconsciousness
(Watson & Clark, 1984), which, understandably, may decrease, restrict or
altogether erode their willingness to participate in situations involving physical activity, as
could have been the case among the present sample of men. As our results on adult
temperament and physical activity are first of their kind, additional research to confirm them
is clearly needed.
Our results on regards personality traits support earlier findings (Allen & Vella, 2015;
Courneya & Hellsten, 1998; Hagan & Hausenblas, 2005) in that high scores in Extraversion
were positively associated with engagement in vigorous physical activity, and that individuals
with higher levels of Openness were more likely to engage in outdoor exercise. Our results did
not provide confirmation for the previously found positive association between Agreeableness
and recreational exercise (Courneya & Hellsten, 1998). Interestingly, we also found
Extraversion to have a positive association with watching sports. Individuals scoring high in
Extraversion have been characterized by gregariousness and a need for intense sensory stimuli
(Costa & McCrae, 1992b; McCrae & John, 1992), needs which, as argued by Wilson and
Dishman (2015), may be met by physical activity. This is not to say that the same needs could
not also be satisfied by more sedentary activities, like watching a football game with friends.
It is probable, therefore, that the present observation between Extraversion and watching sports
relates to the social rather than the sedentary aspect of watching sports. It may also be that
different lower-order facets within the Extraversion trait relate differently to different types of
exercise. According to Artese, Ehley, Sutin and Terracciano (2017), the Activity facet
especially is associated with more frequent engagement in physical activity and less sedentary
time when measured via an accelerometer. The same phenomenon has been noted by Vo and
Bogg (2015) for self-reported physical activity. However, more extensive research on the
lower-order facets of personality traits in relation to physical activity is called for.
Our finding on the positive association between Agreeableness and vigorous physical activity,
despite its being surprising and in contradiction to previous findings (Aşçı et al., 2015; Sutin
et al., 2016; Wilson & Dishman, 2015), is supported by Artese et al. (2017), who reported
Agreeableness to be positively associated with moderate-vigorous physical activity and step
counts. Our results suggest that Agreeableness might be a significant factor in physical activity,
particularly among men. In the same JYLS data, Hietalahti, Rantanen and Kokko (2016) found
Agreeableness to be positively correlated with leisure and physical fitness goals among men.
Our results may, therefore, also be coincidental and reflective only of the present study
population. However, considering that most of the previous studies on personality traits and
physical activity have not taken gender differences into account, our results are hypothesisgenerating
and merit replication in a larger sample.
Our analyses on trait combinations shed light on both the relationship between adult
temperament and personality traits and their simultaneous association with physical activity.
Our results suggest that the women in the present study sample may be seeking something other
than high intensity or strong stimulus from their physical activity. The present results also
imply that these women may be looking for novel experiences when engaging in physical
activity and that men with high levels of negative emotionality are at especial risk for being
physically inactive. On the other hand, our results indicate that self-regulative processes are
related to the ability of men to follow up on high intensity training and perhaps to inhibit the
urge to cease exercise despite the unpleasant sensations possibly induced by intense physical
stimulation. Although generally described by attributes such as altruism, ingenuousness and
kindness (McCrae & John, 1992b), our observation on the association of the trait combination
of Effortful control and Agreeableness with vigorous physical activity engagement may in fact
support the findings of Jensen-Campbell et al. (2002), who suggested that Agreeableness has a
developmental basis in inhibition and self-control rather than social conformity. As our
analyses on individual traits and trait combinations also produced slightly different results,
more emphasis on examining the inter-relationships between temperament and personality
characteristics is needed. Similarly, while the trait combinations presented here gained
theoretical support from existing correlational evidence between temperament and personality
characteristics (Evans & Rothbart, 2007; Pulkkinen et al., 2012; Wiltink et al., 2006), the novel
analytic approach used merits further research.
The present findings add to the extensive line of personality research already conducted on the
JYLS study population, unique in its representativeness and length of follow-up. Previous
studies on the same data have linked personality traits to various meaningful aspects of adult
life, including parenting (Metsäpelto & Pulkkinen, 2003; Rantanen, Tillemann, Metsäpelto,
Kokko, & Pulkkinen, 2015), working life (Viinikainen, Kokko, Pulkkinen, & Pehkonen, 2010;
Viinikainen & Kokko, 2012) and well-being (e.g. Kokko et al., 2013; Mäkikangas et al., 2015).
Our findings extend this knowledge by indicating yet another domain of these individuals’
daily lives, habitual physical activity, to which individual differences in both temperament and
personality traits contribute. Following Kinnunen et al. (2012), our findings also point to the
utility of assessing larger groups of (temperament and) personality characteristics instead of
focusing on individual traits alone.
Highlights
• Both temperament and personality traits are associated with adult physical activity.
• Different traits are related to physical activity engagement among women and men.
• Temperament and personality traits relate to rambling in nature and watching sports.
• Combinations of temperament and personality characteristics need further research.
Abstract: Temperament and physical activity (PA) have been examined in children and adolescents, but little is known about these associations in adulthood. Personality traits, however, are known to contribute to PA in adults. This study, which examined both temperament and personality characteristics at age 42 in relation to frequency of PA at age 50 (JYLS, n = 214-261), also found associations with temperament traits. Positive associations were found between Orienting sensitivity and overall PA and between Extraversion and vigorous PA among women and between low Negative affectivity and overall and vigorous PA among men. Furthermore, Orienting sensitivity and Agreeableness were associated with vigorous PA among men. Temperament and personality characteristics also showed gender-specific associations with rambling in nature and watching sports.
3.4 Discussion
The present study investigated the associations of temperament and personality characteristics,
assessed at age 42, with frequency of engagement in physical activity, assessed at age 50,
among Finnish women and men. Our main findings for the temperament traits were as follows:
(1) Orienting sensitivity showed a positive association with overall physical activity
engagement among women, and with vigorous physical activity engagement and an increased
likelihood of frequent rambling in nature among men. As expected, (2) Negative affectivity
was found to be negatively associated with both overall as well as vigorous physical activity
engagement, but only among men, meaning that men who scored lower in Negative affectivity
were more likely to engage in both overall and vigorous physical activity. In support of this,
men who scored high in Negative affectivity were more likely to watch sports frequently,
which, in this study, was seen to reflect physical inactivity. However, alternative
interpretations, such as the view that watching sports reflects an interest in other people’s
physical activity, are possible, and thus our results suggest that Negative affectivity is
associated with higher physical inactivity but also with interest in sports. Lastly, (3) Surgency
was negatively associated with rambling in nature among women.
Due to the novelty of the present observations for adult temperament, we can only speculate as
to their reasons. It is possible that awareness of extraneous low intensity stimulation, which
characterizes individuals who score high in Orienting sensitivity (Evans & Rothbart, 2007),
leads these individuals to experience physical activity-related physical responses as particularly
pleasant or satisfying, which in turn encourages them to exercise more frequently. Similarly,
the positive association observed here between Orienting sensitivity and rambling in nature
among men may stem from their conscious awareness of their surroundings and its visual
features. Evans and Rothbart (2007) characterize individuals with high levels of Surgency as
needing high levels of strength, complexity or novelty of arousal. This may help to explain
why, among the present women, those with high Surgency scores showed reduced willingness
to ramble in nature, as this type of physical activity does not provide them with adequate
stimuli. Our observation of the negative association between Negative affectivity and overall
and vigorous engagement in physical activity is in line with our study hypothesis. However, as
sports can be watched either individually or in the company of a larger group of people, we are
unable to provide confirmation for our hypothesis that Negative affectivity is positively
associated with, in particular, individually performed exercise types. Some explanation for the
negative association between Negative affectivity and physical activity engagement may be
gained from the general characterization of individuals who score high in Negative affectivity:
these individuals are prone to negative emotional states, such as anxiousness and selfconsciousness
(Watson & Clark, 1984), which, understandably, may decrease, restrict or
altogether erode their willingness to participate in situations involving physical activity, as
could have been the case among the present sample of men. As our results on adult
temperament and physical activity are first of their kind, additional research to confirm them
is clearly needed.
Our results on regards personality traits support earlier findings (Allen & Vella, 2015;
Courneya & Hellsten, 1998; Hagan & Hausenblas, 2005) in that high scores in Extraversion
were positively associated with engagement in vigorous physical activity, and that individuals
with higher levels of Openness were more likely to engage in outdoor exercise. Our results did
not provide confirmation for the previously found positive association between Agreeableness
and recreational exercise (Courneya & Hellsten, 1998). Interestingly, we also found
Extraversion to have a positive association with watching sports. Individuals scoring high in
Extraversion have been characterized by gregariousness and a need for intense sensory stimuli
(Costa & McCrae, 1992b; McCrae & John, 1992), needs which, as argued by Wilson and
Dishman (2015), may be met by physical activity. This is not to say that the same needs could
not also be satisfied by more sedentary activities, like watching a football game with friends.
It is probable, therefore, that the present observation between Extraversion and watching sports
relates to the social rather than the sedentary aspect of watching sports. It may also be that
different lower-order facets within the Extraversion trait relate differently to different types of
exercise. According to Artese, Ehley, Sutin and Terracciano (2017), the Activity facet
especially is associated with more frequent engagement in physical activity and less sedentary
time when measured via an accelerometer. The same phenomenon has been noted by Vo and
Bogg (2015) for self-reported physical activity. However, more extensive research on the
lower-order facets of personality traits in relation to physical activity is called for.
Our finding on the positive association between Agreeableness and vigorous physical activity,
despite its being surprising and in contradiction to previous findings (Aşçı et al., 2015; Sutin
et al., 2016; Wilson & Dishman, 2015), is supported by Artese et al. (2017), who reported
Agreeableness to be positively associated with moderate-vigorous physical activity and step
counts. Our results suggest that Agreeableness might be a significant factor in physical activity,
particularly among men. In the same JYLS data, Hietalahti, Rantanen and Kokko (2016) found
Agreeableness to be positively correlated with leisure and physical fitness goals among men.
Our results may, therefore, also be coincidental and reflective only of the present study
population. However, considering that most of the previous studies on personality traits and
physical activity have not taken gender differences into account, our results are hypothesisgenerating
and merit replication in a larger sample.
Our analyses on trait combinations shed light on both the relationship between adult
temperament and personality traits and their simultaneous association with physical activity.
Our results suggest that the women in the present study sample may be seeking something other
than high intensity or strong stimulus from their physical activity. The present results also
imply that these women may be looking for novel experiences when engaging in physical
activity and that men with high levels of negative emotionality are at especial risk for being
physically inactive. On the other hand, our results indicate that self-regulative processes are
related to the ability of men to follow up on high intensity training and perhaps to inhibit the
urge to cease exercise despite the unpleasant sensations possibly induced by intense physical
stimulation. Although generally described by attributes such as altruism, ingenuousness and
kindness (McCrae & John, 1992b), our observation on the association of the trait combination
of Effortful control and Agreeableness with vigorous physical activity engagement may in fact
support the findings of Jensen-Campbell et al. (2002), who suggested that Agreeableness has a
developmental basis in inhibition and self-control rather than social conformity. As our
analyses on individual traits and trait combinations also produced slightly different results,
more emphasis on examining the inter-relationships between temperament and personality
characteristics is needed. Similarly, while the trait combinations presented here gained
theoretical support from existing correlational evidence between temperament and personality
characteristics (Evans & Rothbart, 2007; Pulkkinen et al., 2012; Wiltink et al., 2006), the novel
analytic approach used merits further research.
The present findings add to the extensive line of personality research already conducted on the
JYLS study population, unique in its representativeness and length of follow-up. Previous
studies on the same data have linked personality traits to various meaningful aspects of adult
life, including parenting (Metsäpelto & Pulkkinen, 2003; Rantanen, Tillemann, Metsäpelto,
Kokko, & Pulkkinen, 2015), working life (Viinikainen, Kokko, Pulkkinen, & Pehkonen, 2010;
Viinikainen & Kokko, 2012) and well-being (e.g. Kokko et al., 2013; Mäkikangas et al., 2015).
Our findings extend this knowledge by indicating yet another domain of these individuals’
daily lives, habitual physical activity, to which individual differences in both temperament and
personality traits contribute. Following Kinnunen et al. (2012), our findings also point to the
utility of assessing larger groups of (temperament and) personality characteristics instead of
focusing on individual traits alone.
Humans can have normal olfaction without apparent olfactory bulbs (seen in 0.6% of women, but not in men); this is associated with left-handedness
Human Olfaction without Apparent Olfactory Bulbs. Tali Weiss et al. Neuron, November 6 2019. https://doi.org/10.1016/j.neuron.2019.10.006
Highlights
• Humans can have normal olfaction without apparent olfactory bulbs
• Olfaction without apparent bulbs is seen in 0.6% of women, but not in men
• Olfaction without apparent bulbs is associated with left-handedness
Summary: The olfactory bulbs (OBs) are the first site of odor representation in the mammalian brain, and their unique ultrastructure is considered a necessary substrate for spatiotemporal coding of smell. Given this, we were struck by the serendipitous observation at MRI of two otherwise healthy young left-handed women, yet with no apparent OBs. Standardized tests revealed normal odor awareness, detection, discrimination, identification, and representation. Functional MRI of these women’s brains revealed that odorant-induced activity in piriform cortex, the primary OB target, was similar in its extent to that of intact controls. Finally, review of a public brain-MRI database with 1,113 participants (606 women) also tested for olfactory performance, uncovered olfaction without anatomically defined OBs in ∼0.6% of women and ∼4.25% of left-handed women. Thus, humans can perform the basic facets of olfaction without canonical OBs, implying extreme plasticity in the functional neuroanatomy of this sensory system.
Highlights
• Humans can have normal olfaction without apparent olfactory bulbs
• Olfaction without apparent bulbs is seen in 0.6% of women, but not in men
• Olfaction without apparent bulbs is associated with left-handedness
Summary: The olfactory bulbs (OBs) are the first site of odor representation in the mammalian brain, and their unique ultrastructure is considered a necessary substrate for spatiotemporal coding of smell. Given this, we were struck by the serendipitous observation at MRI of two otherwise healthy young left-handed women, yet with no apparent OBs. Standardized tests revealed normal odor awareness, detection, discrimination, identification, and representation. Functional MRI of these women’s brains revealed that odorant-induced activity in piriform cortex, the primary OB target, was similar in its extent to that of intact controls. Finally, review of a public brain-MRI database with 1,113 participants (606 women) also tested for olfactory performance, uncovered olfaction without anatomically defined OBs in ∼0.6% of women and ∼4.25% of left-handed women. Thus, humans can perform the basic facets of olfaction without canonical OBs, implying extreme plasticity in the functional neuroanatomy of this sensory system.
After controlling for car length, brand status, and car price, driver seat space remained a positive predictor of illegal parking
Does size matter? Spacious car cockpits may increase the probability of parking violations. Felix C. Meier, Markus Schöbel & Markus A. Feufel. Ergonomics, Volume 61, 2018 - Issue 12, Pages 1613-1618, Oct 26 2018. https://doi.org/10.1080/00140139.2018.1503727
Abstract: Cockpit design is a core area of human factors and ergonomics (HF/E). Ideally, good design compensates for human capacity limitations by distributing task requirements over human and interface to improve safety and performance. Recent empirical findings suggest that the mere spatial layout of car cockpits may influence driver behaviour, expanding current views on HF/E in cockpit design. To assess the reliability of findings showing that an expansive driver seat space predicts parking violations, we replicated an original field study in a geographically and socio-culturally different location and included an additional covariate. After controlling for car length, brand status, and car price, driver seat space remained a positive predictor of illegal parking. This suggests that the spatial design of vehicle cockpits may indeed have an influence on driver behaviour and may therefore be a relevant dimension to be included in research and applications of HF/E in cockpit design.
Practitioner summary: In car cockpit design, ergonomists typically focus on optimising human–machine interfaces to improve traffic safety. We replicate evidence showing that increasing physical space surrounding the driver relates to an increased probability of parking violations. This suggests that spatial design should be added to the ergonomist's toolbox for reducing traffic violations.
Keywords: Embodiment, expansive body postures, traffic safety, cockpit design, parking violations
4 Discussion
Similar to the findings of Yap and colleagues (2013) our study shows that driver seat space predictsthe likelihood of parking violations. This effect could be replicated in a different cultural (Germany vs. US) and urban setting (the rural town of Offenburg vs. the metropolis New York City) focusing ona broad variation of parking violations identified by professional inspectors.Theeffect statistically persisted, even when controlling for car brand status, car length, and car price, the latter of which is also a significant predictor forparking violations.
These findings suggest that driving behaviour and traffic safety may not only be influenced by interactions between the person behind the wheel and interface design, but also by the spatial dimension of the driver'scar cockpit. Furtherresearchinto the effectof driver seat space on behavioural processes(e.g., body postures, risk taking, andviolations)might inform future HF/E research on cockpit design. Relatedly, our results also imply that safe cockpit design should also move beyond the standard error categories of slips, lapses and mistakes,and should also pay attention to violations. Although ample studies investigate the relationship between psychological factors and traffic violations (e.g.,Ba et al. 2016), there are only few HF/E studies on the effect of cockpit designon traffic violations to date (e.g., Aliane et al. 2014). The present study suggests anewavenue for HF/E to systematicallyinvestigate traffic violations in relation to the spatial dimensionof cockpit design. More such studies may have the power to advance the current understanding of traffic violations bycomplementingpsychological sources of violations with those that are located in the environment (Reason 1990).
We are aware that the behavioural effects of body postures are fiercely debated in the literature. Given that this debate is ongoing,there is no clear-cut explanatory accountfor our results. But even ifwecannot explain the effect of body postures on parking violations with our observational design, our results may help trigger additional research for a better understanding of the relationship between driver seat space and traffic violations.
Our study included additional control variables (i.e., car price) compared to the original study by Yap and colleagues. However, there are also other variables, which shouldbe consideredin future studies. For instance, tall or heavy drivers will have different individual seat spaces compared to short and slender drivers. Also, individual seat configuration, that is, whether a seat is adjusted closer to or further away from the steering wheel, influences individual seat spaceand, therefore, body postures. Moreover, Carney, Cuddy, and Yap (2015) discuss that also the time a person remains in a certain posturemay change its effects. Whereas experimental manipulations of body postures forced participants to hold a posture oneminute (Carney, Cuddy, and Yap 2010) or threeminutes (Ranehill et al. 2015), it can be assumed that participants in our study did not “hold” but selected a posture that felt comfortable or natural, potentially for an extended period of time. Clearly, more research is needed to work out both the magnitude and the causal explanations of body posture effects as well astheir relevance for cockpit design. Our results imply that it is worthwhile investigating the thus faru nder-researched impact of driver seat space on traffic behaviour. HF/E is well equipped to follow up on these findings.
Abstract: Cockpit design is a core area of human factors and ergonomics (HF/E). Ideally, good design compensates for human capacity limitations by distributing task requirements over human and interface to improve safety and performance. Recent empirical findings suggest that the mere spatial layout of car cockpits may influence driver behaviour, expanding current views on HF/E in cockpit design. To assess the reliability of findings showing that an expansive driver seat space predicts parking violations, we replicated an original field study in a geographically and socio-culturally different location and included an additional covariate. After controlling for car length, brand status, and car price, driver seat space remained a positive predictor of illegal parking. This suggests that the spatial design of vehicle cockpits may indeed have an influence on driver behaviour and may therefore be a relevant dimension to be included in research and applications of HF/E in cockpit design.
Practitioner summary: In car cockpit design, ergonomists typically focus on optimising human–machine interfaces to improve traffic safety. We replicate evidence showing that increasing physical space surrounding the driver relates to an increased probability of parking violations. This suggests that spatial design should be added to the ergonomist's toolbox for reducing traffic violations.
Keywords: Embodiment, expansive body postures, traffic safety, cockpit design, parking violations
4 Discussion
Similar to the findings of Yap and colleagues (2013) our study shows that driver seat space predictsthe likelihood of parking violations. This effect could be replicated in a different cultural (Germany vs. US) and urban setting (the rural town of Offenburg vs. the metropolis New York City) focusing ona broad variation of parking violations identified by professional inspectors.Theeffect statistically persisted, even when controlling for car brand status, car length, and car price, the latter of which is also a significant predictor forparking violations.
These findings suggest that driving behaviour and traffic safety may not only be influenced by interactions between the person behind the wheel and interface design, but also by the spatial dimension of the driver'scar cockpit. Furtherresearchinto the effectof driver seat space on behavioural processes(e.g., body postures, risk taking, andviolations)might inform future HF/E research on cockpit design. Relatedly, our results also imply that safe cockpit design should also move beyond the standard error categories of slips, lapses and mistakes,and should also pay attention to violations. Although ample studies investigate the relationship between psychological factors and traffic violations (e.g.,Ba et al. 2016), there are only few HF/E studies on the effect of cockpit designon traffic violations to date (e.g., Aliane et al. 2014). The present study suggests anewavenue for HF/E to systematicallyinvestigate traffic violations in relation to the spatial dimensionof cockpit design. More such studies may have the power to advance the current understanding of traffic violations bycomplementingpsychological sources of violations with those that are located in the environment (Reason 1990).
We are aware that the behavioural effects of body postures are fiercely debated in the literature. Given that this debate is ongoing,there is no clear-cut explanatory accountfor our results. But even ifwecannot explain the effect of body postures on parking violations with our observational design, our results may help trigger additional research for a better understanding of the relationship between driver seat space and traffic violations.
Our study included additional control variables (i.e., car price) compared to the original study by Yap and colleagues. However, there are also other variables, which shouldbe consideredin future studies. For instance, tall or heavy drivers will have different individual seat spaces compared to short and slender drivers. Also, individual seat configuration, that is, whether a seat is adjusted closer to or further away from the steering wheel, influences individual seat spaceand, therefore, body postures. Moreover, Carney, Cuddy, and Yap (2015) discuss that also the time a person remains in a certain posturemay change its effects. Whereas experimental manipulations of body postures forced participants to hold a posture oneminute (Carney, Cuddy, and Yap 2010) or threeminutes (Ranehill et al. 2015), it can be assumed that participants in our study did not “hold” but selected a posture that felt comfortable or natural, potentially for an extended period of time. Clearly, more research is needed to work out both the magnitude and the causal explanations of body posture effects as well astheir relevance for cockpit design. Our results imply that it is worthwhile investigating the thus faru nder-researched impact of driver seat space on traffic behaviour. HF/E is well equipped to follow up on these findings.
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