Monday, February 19, 2018

Considerable numbers of individuals are first-time convicted for offenses committed at age 25 or later; adult-onset offending is relatively more prevalent among females than among males

Adulthood-limited offending: How much is there to explain? Fredrik Sivertsson. Journal of Criminal Justice, Volume 55, March–April 2018, Pages 58–70. https://doi.org/10.1016/j.jcrimjus.2018.02.002

Highlights
•    The current study uses prospective population-based longitudinal conviction data.
•    Considerable numbers of individuals are first-time convicted for offenses committed at age 25 or later.
•    Adult-onset offending is relatively more prevalent among females than among males.
•    Adult-onset females account for a substantial share of all female adulthood convictions.

Abstract

Purpose: The current study explores male and female adult-onset offending careers in a Swedish population-based longitudinal dataset comprising five successive birth cohorts which are followed prospectively on the basis of detailed conviction data to age 50.

Methods: Adult-onset offenders are compared to juvenile-onset offenders on a number of criminal career measures. Growth curve analysis is employed to visualize average trajectories for convictions during adulthood.

Results: The study found that 22% of convicted males and 38% of convicted females were convicted for the first time for offenses committed between ages 25 and 50. The adult-onset males contributed 19% of all male adulthood convictions and 16% of male violent convictions in adulthood. The adult-onset females contributed 47% of all female adulthood convictions and 48% of female violent convictions in adulthood. While the adolescent-onset trajectories displayed generally decreasing trends for offending in adulthood, adult-onset females displayed increasing trends in relation to trajectories of violence and drug/alcohol-related offending as they approached middle adulthood.

Conclusions: There is a need for developmental and life-course theories of crime to be explicit in explaining adult-onset offending, particularly in relation to gender disparities.

Keywords: Criminal career; Developmental and life-course criminology; Adult-onset offending; Gender; Population studies; Growth curve

Gender identity is a multifactorial complex trait with a heritable polygenic component

The Biological Contributions to Gender Identity and Gender Diversity: Bringing Data to the Table. Tinca J. C. Polderman et al. Behavior Genetics, https://link.springer.com/article/10.1007/s10519-018-9889-z

Abstract: The American Psychological Association defines gender identity as, “A person’s deeply-felt, inherent sense of being a boy, a man, or a male; a girl, a woman, or a female; or an alternative gender (e.g., genderqueer, gender nonconforming, gender neutral) that may or may not correspond to a person’s sex assigned at birth or to a person’s primary or secondary sex characteristics” (American Psychological Association, Am Psychol 70(9):832–864, 2015). Here we review the evidence that gender identity and related socially defined gender constructs are influenced in part by innate factors including genes. Based on the data reviewed, we hypothesize that gender identity is a multifactorial complex trait with a heritable polygenic component. We argue that increasing the awareness of the biological diversity underlying gender identity development is relevant to all domains of social, medical, and neuroscience research and foundational for reducing health disparities and promoting human-rights protections for gender minorities.

Male brown widow spiders invest much energy in courtship, and risk cannibalism; by mating with subadult females, males save energy and avoid cannibalism, but instead, choose older adult females, despite not gaining any benefit

Male mate choice in a sexually cannibalistic widow spider. Shevy Waner, Uzi Motro, Yael Lubin, Ally R. Harari. Animal Behaviour, Volume 137, March 2018, Pages 189–196, https://doi.org/10.1016/j.anbehav.2018.01.016

Highlights
•    Male brown widow spiders invest much energy in courtship, and risk cannibalism.
•    By mating with subadult females, males save energy and avoid cannibalism.
•    If mated, subadult females are fertile, but males avoided mating with subadults.
•    Instead, males chose older adult females, despite not gaining any benefit.

Abstract: Males of the brown widow spider, Latrodectus geometricus (Theridiidae), invest energy in courtship displays and are often cannibalized after mating; accordingly, partial sex role reversal is expected. In this species, subadult females are able to mate and produce viable offspring. In contrast to mature females, these subadult females do not cannibalize their mates after copulation. Nevertheless, when given a choice, males preferred mature over subadult females and older over young mature females. We found no benefit for males in mating with the females of their choice. Older females were significantly less fecund than young mature females, and were not more fecund than subadult females. We tested possible advantages in mating with cannibalistic (mature) females, such as an increased probability of plugging the female's genital duct or longer copulations, or disadvantages in mating with subadult females, such as higher remating risk. None of these explanations was supported. Thus, we lack an adaptive explanation for male preference for mature older females. We suggest that older females produce more pheromone to attract males and that males are thus misled into mating with older, more aggressive and less fecund females.

Keywords: brown widow spider; courtship; Latrodectus geometricus; mate choice; sexual cannibalism

Saturday, February 17, 2018

Merely Watching Others Perform Can Foster an Illusion of Skill Acquisition

Easier Seen Than Done: Merely Watching Others Perform Can Foster an Illusion of Skill Acquisition. Michael Kardas, Ed O’Brien. Psychological Science, https://doi.org/10.1177/0956797617740646

Abstract: Modern technologies such as YouTube afford unprecedented access to the skilled performances of other people. Six experiments (N = 2,225) reveal that repeatedly watching others can foster an illusion of skill acquisition. The more people merely watch others perform (without actually practicing themselves), the more they nonetheless believe they could perform the skill, too (Experiment 1). However, people’s actual abilities—from throwing darts and doing the moonwalk to playing an online game—do not improve after merely watching others, despite predictions to the contrary (Experiments 2–4). What do viewers see that makes them think they are learning? We found that extensive viewing allows people to track what steps to take (Experiment 5) but not how those steps feel when taking them. Accordingly, experiencing a “taste” of performing attenuates the illusion: Watching others juggle but then holding the pins oneself tempers perceived change in one’s own ability (Experiment 6). These findings highlight unforeseen problems for self-assessment when watching other people.

Keywords: self-assessment, empathy gap, repeated exposure, open data, open materials, preregistered

Cues of woman’s fertility predict prices for sex with prostitutes

Cues of woman’s fertility predict prices for sex with prostitutes. Pavol Prokop et al. Current Psychology, https://link.springer.com/article/10.1007/s12144-018-9807-9

Abstract: Prostitution is an exchange of sexual services for economic profit which predominantly reflects men’s desire for sexually attractive women. These preferences could be shaped by sexual selection, as a woman’s sexual attractiveness is believed to be a cue of fertility. Using data from Polish prostitutes, we investigated whether cues of fertility are associated with the price for sex. In line with evolutionary predictions, prostitute’s age and body mass index (BMI) were negatively correlated with the price for sex, while breast size (except for very large breasts) and number of sexual offerings were positively associated with the price for sex. This suggests that young, slim prostitutes with moderate breasts are more expensive than older, stockier, and those with very large breasts. We suggest that commercial sex exploits men’s evolved preferences for sexually attractive women who have high reproductive potential.

Kids becoming less alike: A behavioral genetic analysis of developmental increases in personality variance from childhood to adolescence

Kids becoming less alike: A behavioral genetic analysis of developmental increases in personality variance from childhood to adolescence. René Mõttus et al. Journal of Personality and Social Psychology , February 2018. https://www.researchgate.net/publication/323112699_Kids_becoming_less_alike_A_behavioral_genetic_analysis_of_developmental_increases_in_personality_variance_from_childhood_to_adolescence

Lay summary: Children and adolescents tend to grow less alike in personality. It is largely their genetic differences that make them increasingly different. This may be because genetic influences predispose children to particular experiences that then amplify these influences.

Abstract: Recent work in personality development has indicated that the magnitude of individual differences in personality increases over child development. Do such patterns reflect the differentiation of individuals by genotype, an increasing influence of environmental factors, or some (interactive) combination of the two? Using a population-based sample of over 2,500 twins and multiples from the Texas Twin Project, we estimated age trends in the variances in self- and parent-reported measures of the Big Five personality traits between ages eight and eighteen years. We then estimated age trends in the genetic and environmental components of variance in each measure. Individual differences in personality increased in magnitude from childhood through mid-adolescence. This pattern emerged using both children's self-reports and ratings provided by their parents, and was primarily attributable to increases in the magnitude of genetic influences. Most of the increasing genetic variance appeared non-additive, pointing to the possibility that developmental processes tend to make genetically similar individuals disproportionately more alike in their personality traits over time. These findings could reflect increasing or accumulating effects of trait-by-trait interactions; person-by-environment transactions whereby genetically similar people are disproportionally likely to experience similar environments; the activation of dominant genes across developmental transitions (e.g., puberty); or some combination of these three processes, among other factors. Theories of personality development will need to accommodate these descriptive findings, and longitudinal, genetically informed designs are needed to test some of the specific hypotheses springing from this study.

Keywords: Development; Personality; Variance; Behavioral Genetics; Non-additive

'Terrorist' or 'mentally ill': Motivated Biases Rooted in Partisanship Shape Attributions About Violent Actors

Noor, Masi, Nour Kteily, Birte Siem, and Agostino Mazziotta 2018. “'Terrorist' or 'mentally ill': Motivated Biases Rooted in Partisanship Shape Attributions About Violent Actors”. PsyArXiv. February 16. psyarxiv.com/49kac

Abstract: We investigated whether motivated reasoning rooted in partisanship affects the attributions individuals make about violent attackers’ underlying motives and group memberships. Study 1 demonstrated that on the day of the Brexit referendum pro–leavers (vs. pro–remainers) attributed an exculpatory (i.e., mental health) versus condemnatory (i.e., terrorism) motive to the killing of a pro-remain politician. Study 2 demonstrated that pro– (vs. anti–) immigration perceivers in Germany ascribed a mental health (vs. terrorism) motive to a suicide attack by a Syrian refugee, predicting lower endorsement of punitiveness against his group (i.e., refugees) as a whole. Study 3 experimentally manipulated target motives, showing that Americans distanced a politically-motivated (vs. mentally ill) violent individual from their ingroup and assigned him harsher punishment— patterns most pronounced amongst high group identifiers.

Friday, February 16, 2018

Do Red Objects Enhance Sexual Attractiveness? No Evidence from Two Large Replications and an Extension

Pollet, Thomas V., Joanne Costello, Lotte Groeneboom, Leonard S Peperkoorn, and Junhui Wu 2018. “Do Red Objects Enhance Sexual Attractiveness? No Evidence from Two Large Replications and an Extension”. PsyArXiv. February 16. psyarxiv.com/3bfwh

Abstract: Color has been argued to exert a powerful effect on motivation and behavior. This has led researchers, most notably in social psychology, to examine the effects of color on perceptions of (sexual) attractiveness. Building on a body of work on the ‘romantic red effect’, Lin (2014) found evidence that the color of a laptop influenced ratings of a woman’s sexual attractiveness. If this holds true, then color effects could have profound importance for the marketing of consumer products such as laptops. Here we present two replications, one in the Netherlands and one in China, investigating whether red products increase perceptions of attractiveness. In addition, we also present an extension where we use a different object (a watch) and evaluate male attractiveness, rather than female attractiveness. Across three studies, totaling over 600 participants, we found no support for the claim that red products enhance sexual attractiveness. We discuss the implications for research on color and attractiveness and its implications for consumer research.

Magical thinking decreases across adulthood

Brashier, N. M., & Multhaup, K. S. (2017). Magical thinking decreases across adulthood. Psychology and Aging, 32(8), 681-688. http://dx.doi.org/10.1037/pag0000208

Abstract: Magical thinking, or illogical causal reasoning such as superstitions, decreases across childhood, but almost no data speak to whether this developmental trajectory continues across the life span. In four experiments, magical thinking decreased across adulthood. This pattern replicated across two judgment domains and could not be explained by age-related differences in tolerance of ambiguity, domain-specific knowledge, or search for meaning. These data complement and extend findings that experience, accumulated over decades, guides older adults’ judgments so that they match, or even exceed, young adults’ performance. They also counter participants’ expectations, and cultural sayings (e.g., “old wives’ tales”), that suggest that older adults are especially superstitious.

Born criminal? Differences in structural, functional and behavioural lateralization between criminals and noncriminals

Born criminal? Differences in structural, functional and behavioural lateralization between criminals and noncriminals. Priscilla Savopoulos & Annukka K. Lindell. Laterality: Asymmetries of Body, Brain and Cognition, https://doi.org/10.1080/1357650X.2018.1432631

ABSTRACT: Over 100 years ago Lombroso [(1876/2006). Criminal man. Durham: Duke University Press] proposed a biological basis for criminality. Based on inspection of criminals’ skulls he theorized that an imbalance of the cerebral hemispheres was amongst 18 distinguishing features of the criminal brain. Specifically, criminals were less lateralized than noncriminals. As the advent of neuroscientific techniques makes more fine-grained inspection of differences in brain structure and function possible, we review criminals’ and noncriminals’ structural, functional, and behavioural lateralization to evaluate the merits of Lombroso’s thesis and investigate the evidence for the biological underpinning of criminal behaviour. Although the body of research is presently small, it appears consistent with Lombroso’s proposal: criminal psychopaths’ brains show atypical structural asymmetries, with reduced right hemisphere grey and white matter volumes, and abnormal interhemispheric connectivity. Functional asymmetries are also atypical, with criminal psychopaths showing a less lateralized cortical response than noncriminals across verbal, visuo-spatial, and emotional tasks. Finally, the incidence of non-right-handedness is higher in criminal than non-criminal populations, consistent with reduced cortical lateralization. Thus despite Lombroso’s comparatively primitive and inferential research methods, his conclusion that criminals’ lateralization differs from that of noncriminals is borne out by the neuroscientific research. How atypical cortical asymmetries predispose criminal behaviour remains to be determined.

KEYWORDS: Lateralization, criminal, brain, handedness, psychopathy


Check also: A population-specific HTR2B stop codon predisposes to severe impulsivity. L Bevilacqua et al. Nature. 2010 Dec 23;468(7327):1061-6. doi: 10.1038/nature09629. Erratum in Nature, 2011 Feb 17;470(7334):424.
Abstract: Impulsivity, describing action without foresight, is an important feature of several psychiatric diseases, suicidality and violent behaviour. The complex origins of impulsivity hinder identification of the genes influencing it and the diseases with which it is associated. Here we perform exon-focused sequencing of impulsive individuals in a founder population, targeting fourteen genes belonging to the serotonin and dopamine domain. A stop codon in HTR2B was identified that is common (minor allele frequency > 1%) but exclusive to Finnish people. Expression of the gene in the human brain was assessed, as well as the molecular functionality of the stop codon, which was associated with psychiatric diseases marked by impulsivity in both population and family-based analyses. Knockout of Htr2b increased impulsive behaviours in mice, indicative of predictive validity. Our study shows the potential for identifying and tracing effects of rare alleles in complex behavioural phenotypes using founder populations, and indicates a role for HTR2B in impulsivity.

An anticipated reality becoming current triggers an observable boost in people’s rationalizations

Inaugurating Rationalization: Three Field Studies Find Increased Rationalization When Anticipated Realities Become Current. Kristin Laurin,  https://doi.org/10.1177/0956797617738814

Abstract: People will often rationalize the status quo, reconstruing it in an exaggeratedly positive light. They will even rationalize the status quo they anticipate, emphasizing the upsides and minimizing the downsides of sociopolitical realities they expect to take effect. Drawing on recent findings on the psychological triggers of rationalization, I present results from three field studies, one of which was preregistered, testing the hypothesis that an anticipated reality becoming current triggers an observable boost in people’s rationalizations. San Franciscans rationalized a ban on plastic water bottles, Ontarians rationalized a targeted smoking ban, and Americans rationalized the presidency of Donald Trump, more in the days immediately after these realities became current compared with the days immediately before. Additional findings show evidence for a mechanism underlying these behaviors and rule out alternative accounts. These findings carry implications for scholarship on rationalization, for understanding protest behavior, and for policymakers.

Keywords: rationalization, system justification, anticipatory rationalization, political psychology, motivated cognition, open data, open materials, and preregistered

Toward a multifactorial model of expertise: beyond born versus made

Hambrick, D. Z., Burgoyne, A. P., Macnamara, B. N. and Ullén, F. (2018), Toward a multifactorial model of expertise: beyond born versus made. Ann. N.Y. Acad. Sci.. doi:10.1111/nyas.13586

Abstract: The debate over the origins of individual differences in expertise has raged for over a century in psychology. The “nature” view holds that expertise reflects “innate talent”—that is, genetically determined abilities. The “nurture” view counters that, if talent even exists, its effects on ultimate performance are negligible. While no scientist takes seriously a strict nature-only view of expertise, the nurture view has gained tremendous popularity over the past several decades. This environmentalist view holds that individual differences in expertise reflect training history, with no important contribution to ultimate performance by innate ability (“talent”). Here, we argue that, despite its popularity, this view is inadequate to account for the evidence concerning the origins of expertise that has accumulated since the view was first proposed. More generally, we argue that the nature versus nurture debate in research on expertise is over—or certainly should be, as it has been in other areas of psychological research for decades. We describe a multifactorial model for research on the nature and nurture of expertise, which we believe will provide a progressive direction for future research on expertise.

When a schadenfreude eliciting misfortune happens to an envied person, this reduces subsequent envy

van de Ven, Niels, 2018. “A Schadenfreude Inducing Misfortune Reduces Envy”. Open Science Framework. February 15. osf.io/hny3r

Abstract: Three studies find that when a schadenfreude eliciting misfortune happens to an envied person, this reduces subsequent envy. The results are consistent with the idea that schadenfreude serves as a signal that the prior imbalance in how one would like the world to see (caused by the other being better off than we would like him/her to be) is restored again.

Thursday, February 15, 2018

Psychotherapy was a marvellous invention, but initial enthusiasm regarding its efficacy has now been obfuscated due to scientific biases that systematically inflate estimates

Raising awareness for the replication crisis in clinical psychology by focusing on inconsistencies in psychotherapy research: how much can we rely on published findings from efficacy trials? Michael P. Hengartner. Front. Psychol. | doi: 10.3389/fpsyg.2018.00256

Summary and conclusions: As in other psychological specialties (see Bakker et al., 2012), effect sizes published in the clinical psychological literature are often heterogeneous and inflated due to various scientific biases including allegiance bias (Luborsky et al., 1999), publication bias (Driessen et al., 2015), unblinded outcome assessors (Khan et al., 2012), sponsorship bias (Cristea et al., 2017b), or small sample sizes (Cuijpers et al., 2010b). After adjustment for systematic biases, efficacy estimates for various psychotherapy modalities tend to be disappointingly small (Cristea et al., 2017a; Cuijpers et al., 2010b). Some evidence suggests that when efficacy is estimated based exclusively on unbiased high-quality trials, effects of psychotherapy could fall below the threshold for clinical relevance (Cuijpers et al., 2014a). Recently, some psychotherapy researchers hence raised the controversial point that effects of both psychotherapy and pharmacotherapy for depression may entirely reflect a placebo effect (Cuijpers & Cristea, 2015). Of further concern is the gap between treatment efficacy in controlled laboratory trials and treatment effectiveness in naturalistic real-world settings (Hallfors & Cho, 2007; Westen et al., 2004). The literature reviewed in this commentary was restricted to the efficacy of clinical psychological interventions, as that topic is highly relevant for clinical psychology. Nevertheless, conflicting and irreproducible findings have been detected and discussed in various other hot topics within clinical psychology, including the effect of menopause on the occurrence of depression (Hengartner, 2017; Rössler et al., 2016), the putative consequences of violent video games (Calvert et al., 2017; Ferguson and Kilburn, 2010), or inconsistent associations between psychopathology and stress physiology (Chida and Hamer, 2008; Rosmalen and Oldehinkel, 2011). Even though the replication crisis was mostly addressed within social psychology, I conclude that it is no less pernicious and prevalent in clinical psychology. Psychotherapy was a marvellous invention, but initial enthusiasm regarding its efficacy has now been obfuscated due to scientific biases that systematically inflate estimates. Being aware of these issues may certainly improve our scientific and clinical endeavours.

While women no longer tend to marry up in education, they still do in terms of earnings

The Reversal of the Gender Gap in Education and its Consequences for Family Life. Jan Van Bavel, Christine Schwartz, Albert Esteve. Forthcoming in Annual Review of Sociology, vol. 44, 2018. https://lirias.kuleuven.be/handle/123456789/611965

Abstract: While men tended to receive more education than women in the past, the gender gap in education has reversed in recent decades in most Western and many non-Western countries. We review the literature about the implications for union formation, assortative mating, the division of paid and unpaid work, and union stability in Western countries. The bulk of the evidence points to a narrowing of gender differences in mate preferences and declining aversion to female status-dominant relationships. Couples in which wives have more education than their husbands now outnumber those in which husbands have more. While such marriages were more unstable in the past, existing studies indicate that this is no longer true. In addition, recent studies show less evidence of gender display in housework when wives have higher status than their husbands. Despite these shifts, other research documents the continuing influence of the breadwinner-homemaker model of marriage.