Sunday, February 11, 2018

In mental rotation, homosexual men were somewhat in-between heterosexual men and women. There was no significant group difference on spatial location memory. Homosexual men were also sex atypical on male-favoring spatial-related tasks and female-favoring spatial-related tasks. Homosexual women tended to be sex-typical (similar to heterosexual women).

Xu, Yin, Sam Norton, and Qazi Rahman 2017. “Sexual Orientation and Cognitive Ability: A Multivariate Meta-analytic Follow-up”. PsyArXiv. September 25. psyarxiv.com/chg2r

Abstract: A cross-sex shift model of human sexual orientation differences predicts that homosexual men should perform or score in the direction of heterosexual women, and homosexual women in the direction of heterosexual men, in behavioral domains such as cognition and personality. In order to test whether homosexual men and women’s cognitive performance was closer to that of heterosexual men or that of heterosexual women (i.e., sex atypical for their sex), we conducted a multivariate meta-analysis based on data from our previous meta-analysis (Xu, Norton, & Rahman, 2017). A subset of this data was used and comprised a total of 49 samples and 251,393 participants. The multivariate meta-analysis revealed that homosexual men were indeed sex-atypical in mental rotation (Hedges’ g = -0.36) and the Water Level Test (Hedges’ g = -0.55). In mental rotation, homosexual men were somewhat in-between heterosexual men and women. There was no significant group difference on spatial location memory. Homosexual men were also sex atypical on male-favoring spatial-related tasks (Hedges’ g = -0.54), and female-favoring spatial-related tasks (Hedges’ g = 0.38). Homosexual women tended to be sex-typical (similar to heterosexual women). There were no significant group differences on male-favoring other tasks or female-favoring verbal-related tasks. Heterosexual men and women differed significantly on female-favoring other tasks. These results support the cross-sex shift hypothesis which predicts that homosexual men perform in the direction of heterosexual women in sex differentiated cognitive domains. However, the type of task and cognitive domain tested is critical.

Near ovulation, women were willing to accept lesser versions of a product (a $5,000 diamond ring in lieu of a $7,000 one) as long as they had better products than other women. And, ovulating women kept more money for themselves in the Dictator Game rather than give it to another woman

Durante KM, Griskevicius V. Evolution and consumer psychology. Consum Psychol Rev. 2018;1:4–21. https://doi.org/10.1002/arcp.1001

Abstract: An evolutionary theoretical approach considers the adaptive function of behavior. Here we discuss what it means to use an evolutionary approach to generate predictions about consumer behavior and the value of applying an evolutionary lens to the study of consumer psychology. We begin with a discussion of the core insights of evolutionary theory and the common misperceptions associated with an evolutionary approach to the study of behavior. We then detail how specific evolutionarily informed theories can be applied to four core areas of consumer research: risk preference, competition and luxury consumption, self-control and temporal preferences, and the consumer behavior of women and families. We also discuss the strengths and limitations of an evolutionarily informed research program.

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The ovulatory shift hypothesis suggests that mating goals are particularly salient for women near ovulation. For example, when it comes to fashion, research shows that ovulation has a large effect on women’s desire to look more attractive and dress in sexier outfits (Durante, Griskevicius, Hill, Perilloux, & Li, 2011; Durante, Li, & Haselton, 2008; Saad & Stenstrom, 2012). The desire to dress sexy at ovulation was found to be related specifically to outcompeting other women for access to the best men available. For example, ovulation has the strongest effect on women’s desire for sexier clothing when women know that there are many other attractive women in their local environment (Durante et al., 2011), that is, when there is lots of competition for mates.

Thus, if status competition and luxury consumption are related to mating, the ovulatory shift hypothesis may shed light on women’s desire for luxury products. Recent research drawing on this hypothesis proposed the idea that ovulation should not only enhance women’s mating motivations, but also women’s desire to compete with other women for status (Durante, Griskevicius, Cantú, & Simpson, 2014). This idea is consistent with research in nonhuman primates. For example, female rhesus monkeys become more aggressive and competitive with other females (not males) during the ovulatory phase (Walker, Wilson, & Gordon, 1983; Wallen, 2000).

Putting this lens to women’s desire for luxury goods, it was found that, near ovulation, women desire more expensive products and this effect is related to increased competitive tendencies (Durante et al., 2014; Kim, Durante, Griskevicius, & Nikiforidis, 2017). For example, in one study, ovulating and nonovulating women made product choices that could either  maximize absolute gains or maximize gains relative to other women (Durante et al., 2014). The findings showed that ovulation made women more competitive with regard to other women. Near ovulation, women were willing to accept lesser versions of a product (a $5,000 diamond ring in lieu of a $7,000 diamond ring) as long as they had better products than other women. And, ovulating women kept more money for themselves in the Dictator Game rather than give it to another woman. Ovulating women also prefer luxury (compared to nonluxury) products and conspicuous goods as a direct reflection of a desire to outcompete rival women for status and access to mates (Kim et al., 2017). When it comes to wanting multiple versions of products, ovulation enhances this, too (Durante & Arsena, 2014).


Check also The Rival Wears Prada: Luxury Consumption as a Female Competition Strategy. Liselot Hudders et al. Evolutionary Psychology, Volume: 12 issue: 3.  https://doi.org/10.1177/147470491401200306
Abstract: Previous studies on luxury consumption demonstrated that men spend large sums of money on luxury brands to signal their mate value to women and, thus, increase their reproductive success. Although women also spend copious amounts of money on luxuries, research focusing on women's motives for luxury consumption is rather scarce. Relying on costly signaling and intrasexual competition theory, the goal of the current study was to test whether female intrasexual competition in a mate attraction context triggers women's spending on luxuries. The results of the first experiment reveal that an intrasexual competition context enhances women's preferences for attractiveness enhancing, but not for non-attractiveness related luxuries such as a smartphone. This finding indicates that women may use luxury consumption as a self-promotion strategy during within-sex competitions, as these luxuries improve their advantages against same-sex rivals for mates. A follow-up study shows that compared to women who do not consume luxuries, women who do so are perceived as more attractive, flirty, young, ambitious, sexy, and less loyal, mature and smart by other women. These results suggest that luxury consumption may provide information about a women's willingness to engage in sex, as well as her views about other women, and consequently, her success in intrasexual competitions.

Keywords: women, intrasexual competition, luxury consumption, sex differences, status

Physically inactive lifestyle is associated with long-term detrimental personality trajectories: steeper declines in conscientiousness, openness, extraversion and agreeableness

Physical Activity and Personality Development over Twenty Years: Evidence from Three Longitudinal Samples. Yannick Stephan et al. Journal of Research in Personality, https://doi.org/10.1016/j.jrp.2018.02.005

Highlights
•    Physical activity is related to personality change over 20 years in three samples.
•    Physical inactivity was related to declines in conscientiousness in three samples.
•    A physically inactive lifestyle is associated with detrimental personality trajectories.

Abstract: A physically inactive lifestyle is associated with maladaptive patterns of personality development over relatively short follow-up periods. The present study extends existing research by examining whether this association persists over 20 years. Participants (total N = 8,723) were drawn from the Wisconsin Longitudinal Study Graduates and Siblings samples and the Midlife in the United States Study. Controlling for demographic factors and disease burden, baseline physical inactivity was related to steeper declines in conscientiousness in all three samples and a meta-analysis (β=-.06). The meta-analysis further showed that lower physical activity was associated with declines in openness (β=-.05), extraversion (β=-.03), and agreeableness (β=-.03). These findings provide evidence that a physically inactive lifestyle is associated with long-term detrimental personality trajectories.

Keywords: Personality development; physical inactivity; adulthood

High parental investment in childhood was associated with increased mate value in adulthood

Antfolk, Jan,and Agneta Sjölund 2018. “Parental Investment and Mate Value”. PsyArXiv. February 10. doi:10.1016/j.paid.2018.02.004

Abstract: Stressors in the childhood environment, such as decreased parental investment (PI) regulates an individual’s reproductive behaviors. The effect of these behaviors on fitness is partly determined by individual mate value (MV). We tested whether PI during childhood is associated to MV in adulthood. Adult men and women (N = 1244) reported received maternal and paternal investment, and also current MV. We found that high PI in childhood was associated with increased MV in adulthood. Additionally, there was a positive correlation between maternal and paternal investment and the association between paternal investment and MV was mediated through maternal investment. We conclude that PI, especially maternal investment, might influence MV in offspring.