Inequity aversion is observed in common marmosets but not in marmoset models of autism induced by prenatal exposure to valproic acid. Miyuki Yasue et al. Behavioural Brain Research, Volume 343, 2 May 2018, Pages 36–40. https://doi.org/10.1016/j.bbr.2018.01.013
Highlights
• Male and female marmosets show inequity aversion.
• Valproic acid-induced ASD animals did not respond negatively to inequity.
• Marmoset models of ASD cared less about others’ reward conditions than controls.
Abstract: Humans and various nonhuman primates respond negatively to inequity not in their favor (i.e., inequity aversion), when inequity between two individuals is introduced. Common marmosets, a highly prosocial species, further discriminated between human actors who reciprocated in social exchanges, and those who did not. Conversely, marmoset models of autism, induced via prenatal exposure to valproic acid (VPA marmosets), did not discriminate. Interestingly, previous studies of inequity aversion in marmosets have produced negative results, or were limited to males. Recent studies suggest that inequity aversion is highly influenced by the tasks employed. Here we show inequity aversion in both male and female marmosets using a novel task which required a relatively long duration of response. Marmosets were required to hold a spoon for 2 s to receive a reward. Marmosets successfully performed the task when they observed an unfamiliar conspecific partner obtaining the same reward (equity test). However, when they witnessed the partner receiving a more attractive reward for equal effort (inequity test), unexposed marmosets, which were not exposed to either valproic acid or saline during the fetal period refused to respond. This inequity aversion was not observed in unexposed marmosets when the partner was absent. In contrast, marmosets with fetal exposure to valproic acid (VPA marmosets) successfully executed the task irrespective of their partners’ reward conditions. As prenatal exposure to valproic acid is a well-known procedure to induce autism spectrum disorder (ASD)-like behaviors in rodents, we propose that VPA marmosets failed to show inequity aversion due to weak social motivation or interest towards others.
Keywords: Animal model; Autistic spectrum disorder (ASD); Monkey; Inequity aversion; Prosocial behaviors; Valtroic acid (VPA); Marmosets
Monday, February 5, 2018
Genetic and Environmental Influences on Self-Control: Assessing Self-Control with the ASEBA Self-Control Scale
Genetic and Environmental Influences on Self-Control: Assessing Self-Control with the ASEBA Self-Control Scale. Yayouk E. Willems et al. Behavior Genetics, https://link.springer.com/article/10.1007/s10519-018-9887-1
Abstract: This study used a theoretically-derived set of items of the Achenbach System of Empirically Based Assessment to develop the Achenbach Self-Control Scale (ASCS) for 7–16 year olds. Using a large dataset of over 20,000 children, who are enrolled in the Netherlands Twin Register, we demonstrated the psychometric properties of the ASCS for parent-, self- and teacher-report by examining internal and criterion validity, and inter-rater and test–retest reliability. We found associations between the ASCS and measures of well-being, educational achievement, and substance use. Next, we applied the classical twin design to estimate the genetic and environmental contributions to self-control. Genetic influences accounted for 64–75% of the variance in self-control based on parent- and teacher-report (age 7–12), and for 47–49% of the variance in self-control based on self-report (age 12–16), with the remaining variance accounted by non-shared environmental influences. In conclusion, we developed a validated and accessible self-control scale, and show that genetic influences explain a majority of the individual differences in self-control across youth aged 7–16 years.
Abstract: This study used a theoretically-derived set of items of the Achenbach System of Empirically Based Assessment to develop the Achenbach Self-Control Scale (ASCS) for 7–16 year olds. Using a large dataset of over 20,000 children, who are enrolled in the Netherlands Twin Register, we demonstrated the psychometric properties of the ASCS for parent-, self- and teacher-report by examining internal and criterion validity, and inter-rater and test–retest reliability. We found associations between the ASCS and measures of well-being, educational achievement, and substance use. Next, we applied the classical twin design to estimate the genetic and environmental contributions to self-control. Genetic influences accounted for 64–75% of the variance in self-control based on parent- and teacher-report (age 7–12), and for 47–49% of the variance in self-control based on self-report (age 12–16), with the remaining variance accounted by non-shared environmental influences. In conclusion, we developed a validated and accessible self-control scale, and show that genetic influences explain a majority of the individual differences in self-control across youth aged 7–16 years.
In this case, the APA attempted to “sell” itself as a solution to the perceived violent video game problem
Selling violent video game solutions: A look inside the APA's internal notes leading to the creation of the APA's 2005 resolution on violence in video games and interactive media. Allen Copenhaver, Christopher J. Ferguson. International Journal of Law and Psychiatry, Volume 57, March–April 2018, Pages 77–84. https://doi.org/10.1016/j.ijlp.2018.01.004
Abstract: For decades politicians, parent groups, researchers, media outlets, professionals in various fields, and laymen have debated the effects playing violent video games have on children and adolescents. In academia, there also exists a divide as to whether violent video games cause children and adolescents to be aggressive, violent, and even engage in criminal behavior. Given inconsistencies in the data, it may be important to understand the ways and the reasons why professional organizations take a stance on the violent video game effects debate which may reflect greater expressed certitude than data can support. This piece focuses on the American Psychological Association's internal communications leading to the creation of their 2005 Resolution on Violence in Video Games and Interactive Media. These communications reveal that in this case, the APA attempted to “sell” itself as a solution to the perceived violent video game problem. The actions leading to the 2005 resolution are then compared to the actions of the APA's 2013–2015 Task Force on Violent Media. The implications and problems associated with the APA's actions regarding violent video games are addressed and discussed below.
Keywords: Violent video games and aggression; Violent media; Media & crime; Media & politics; Task forces
Abstract: For decades politicians, parent groups, researchers, media outlets, professionals in various fields, and laymen have debated the effects playing violent video games have on children and adolescents. In academia, there also exists a divide as to whether violent video games cause children and adolescents to be aggressive, violent, and even engage in criminal behavior. Given inconsistencies in the data, it may be important to understand the ways and the reasons why professional organizations take a stance on the violent video game effects debate which may reflect greater expressed certitude than data can support. This piece focuses on the American Psychological Association's internal communications leading to the creation of their 2005 Resolution on Violence in Video Games and Interactive Media. These communications reveal that in this case, the APA attempted to “sell” itself as a solution to the perceived violent video game problem. The actions leading to the 2005 resolution are then compared to the actions of the APA's 2013–2015 Task Force on Violent Media. The implications and problems associated with the APA's actions regarding violent video games are addressed and discussed below.
Keywords: Violent video games and aggression; Violent media; Media & crime; Media & politics; Task forces
Big Five Traits and Inclusive Generalized Prejudice
Crawford, Jarret,and Mark J Brandt 2018. “Big Five Traits and Inclusive Generalized Prejudice”. PsyArXiv. February 5. psyarxiv.com/6vqwk
Abstract: Existing meta-analytic evidence finds that low levels of Openness and Agreeableness correlate with generalized prejudice. However, previous studies relied on restricted operationalizations of generalized prejudice that only assessed prejudice toward disadvantaged, low-status groups. Across four samples (total N = 7,543), we tested the associations between Big Five traits and generalized prejudice using an inclusive operationalization of generalized prejudice. A meta-analysis of these findings indicates that Openness was only very weakly related to inclusive generalized prejudice, r = -.03, 95%CI [-.07, -.001], whereas low Agreeableness was reliably associated with inclusive generalized prejudice (r = -.23, 95%CI [-.31, -.16]). We additionally found that perceived target ideology moderated relationships between Openness and Conscientiousness and prejudice, and that perceived target status moderated relationships between Agreeableness and Extraversion and prejudice. These results provide new and more nuanced insights into the relationship between personality and prejudice.
Abstract: Existing meta-analytic evidence finds that low levels of Openness and Agreeableness correlate with generalized prejudice. However, previous studies relied on restricted operationalizations of generalized prejudice that only assessed prejudice toward disadvantaged, low-status groups. Across four samples (total N = 7,543), we tested the associations between Big Five traits and generalized prejudice using an inclusive operationalization of generalized prejudice. A meta-analysis of these findings indicates that Openness was only very weakly related to inclusive generalized prejudice, r = -.03, 95%CI [-.07, -.001], whereas low Agreeableness was reliably associated with inclusive generalized prejudice (r = -.23, 95%CI [-.31, -.16]). We additionally found that perceived target ideology moderated relationships between Openness and Conscientiousness and prejudice, and that perceived target status moderated relationships between Agreeableness and Extraversion and prejudice. These results provide new and more nuanced insights into the relationship between personality and prejudice.
Is regulation to blame for the decline in American entrepreneurship?
Nathan Goldschlag, Alex Tabarrok; Is regulation to blame for the decline in American entrepreneurship?, Economic Policy, Volume 33, Issue 93, 1 January 2018, Pages 5–44, https://doi.org/10.1093/epolic/eix019
SUMMARY: Mounting evidence suggests that economic dynamism and entrepreneurial activity are declining in the United States. Over the past 30 years, the annual number of new business startups and the pace of job reallocation have declined significantly. We ask whether this decline in dynamism can be explained by federal regulation. We combine measures of dynamism with RegData, a novel dataset leveraging the text of the Code of Federal Regulations to create annual measures of the total quantity of regulation by industry. We find that rising federal regulation cannot explain secular trends in economic dynamism.
SUMMARY: Mounting evidence suggests that economic dynamism and entrepreneurial activity are declining in the United States. Over the past 30 years, the annual number of new business startups and the pace of job reallocation have declined significantly. We ask whether this decline in dynamism can be explained by federal regulation. We combine measures of dynamism with RegData, a novel dataset leveraging the text of the Code of Federal Regulations to create annual measures of the total quantity of regulation by industry. We find that rising federal regulation cannot explain secular trends in economic dynamism.
We contend that video game playing behavior, particularly insofar as it occurs within the home, alters the routine activities of individuals in such a way as to decrease the number of criminal opportunities present within a society
Cocooned from Crime: The Relationship Between Video Games and Crime. Kevin McCaffree, K. Ryan Proctor. Society, February 2018, Volume 55, Issue 1, pp 41–52. https://doi.org/10.1007/s12115-017-0211-0
Abstract: The majority of research on the relationship between video game playing behavior and crime has been conducted by psychologists, has focused only on violent videogames, and suffers from two major shortcomings. First, psychologists have adopted correlational or experimental methodologies that do not in fact assess the empirical relationship between video game playing behavior and crime. Instead, they examine the relationship between video game playing behavior and aggression, and then infer research findings have social implications related to crime. Second, when making such inferences, these studies presume that meso and macro level phenomena are nothing more than the aggregated consequences of micro level events. Recent studies, however, have raised questions surrounding these two components of psychological research, as they have identified negative relationships between video game playing behavior and crime at county and national levels. In this study, we propose that these seemingly contradictory results can be explained using routine activities theory (Cohen and Felson 1979). We contend that video game playing behavior, particularly insofar as it occurs within the home, alters the routine activities of individuals in such a way as to decrease the number of criminal opportunities present within a society. We provide an initial test of this hypothesis using UCR, CPS, and Census data. As predicted by routine activities theory, we find that rates of video game playing behavior in the home are negatively associated with both violent and property crime.
Abstract: The majority of research on the relationship between video game playing behavior and crime has been conducted by psychologists, has focused only on violent videogames, and suffers from two major shortcomings. First, psychologists have adopted correlational or experimental methodologies that do not in fact assess the empirical relationship between video game playing behavior and crime. Instead, they examine the relationship between video game playing behavior and aggression, and then infer research findings have social implications related to crime. Second, when making such inferences, these studies presume that meso and macro level phenomena are nothing more than the aggregated consequences of micro level events. Recent studies, however, have raised questions surrounding these two components of psychological research, as they have identified negative relationships between video game playing behavior and crime at county and national levels. In this study, we propose that these seemingly contradictory results can be explained using routine activities theory (Cohen and Felson 1979). We contend that video game playing behavior, particularly insofar as it occurs within the home, alters the routine activities of individuals in such a way as to decrease the number of criminal opportunities present within a society. We provide an initial test of this hypothesis using UCR, CPS, and Census data. As predicted by routine activities theory, we find that rates of video game playing behavior in the home are negatively associated with both violent and property crime.
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