Evolutionary Psychology最新文献

A new measure to assess friendship jealousy in the context of social media was developed. This one-factor, seven-item measure was psychometrically sound, showing evidence of validity and reliability in three samples of North American adults (Study 1, n = 491; Study 2, n = 494; Study 3, n = 415) and one-, two-, and three-year stability (Study 3). Women reported more social media friendship jealousy than men (Studies 2 and 3) and younger women had the highest levels of social media friendship jealousy (compared with younger men and older men and women; Study 2). Social media friendship jealousy was associated with lower friendship quality (Study 1) and higher social media use and trait jealousy (Study 2). The relation between social media friendship jealousy and internalizing symptoms indicated positive within time associations and longitudinal bidirectional relations (Study 3). Specifically, social media friendship jealousy predicted increases in internalizing problems, and internalizing problems predicted greater social media friendship jealousy accounting for gender and trait levels of social media friendship jealousy and internalizing problems. Anxious and depressed adults may be predisposed to monitor threats to their friendships via social media and experience negative consequences because of this behavior. Although social media interactions can be associated with positive well-being and social connectedness, our results highlight that they can also undermine friendships and mental health due to jealousy.

While a wealth of research has focused on testing several arguments from Moffitt's developmental taxonomy of antisocial behavior-mainly the presence of life-course-persistent vs. adolescence-limited offending and predictors of each trajectory-much less attention has been devoted to examining how evolutionarily adaptive lifestyle factors common during adolescence may condition the relationship between the maturity gap and delinquent offending. One factor that may play a role during this period of development is alcohol use, as many adolescents begin to experiment with consuming alcohol in varying degrees in social settings to model adult-like behaviors. Yet presently much is unknown about the role of alcohol use on the association between the maturity gap and delinquency. The current study aims to address this void in the literature by analyzing data from a U.S. sample of adolescent males (N = 1,276) to assess whether alcohol use moderates the relationship between the maturity gap and delinquent behavior. Findings suggest that the maturity gap is associated with delinquent behavior and that the association becomes weaker at higher levels of alcohol use. The implications of these findings for Moffitt's maturity gap thesis and male offending from an evolutionary perspective are discussed.

Parents want daughters- and sons-in-law who are similar to their children, and children want spouses who are similar to themselves. In turn, the question arises: Do parents agree among themselves on how much similarity they desire in their prospective in-laws concerning their children? Moreover, do parents and children agree on the level of similarity they desire in an in-law and a spouse, respectively? Furthermore, to exercise an in-law preference for similarity, parents need to assess how their children score in traits deemed desirable in a spouse. This raises the question of whether mothers and fathers perceive their children similarly, and whether they perceive their children in the same way their children perceive themselves in these traits. The current study aimed to address these questions using a sample of 356 families from China, focusing on four desirable traits: good looks, good providers, good economic prospects, and good family background. Our results indicated that parents preferred sons- and daughters-in-law who were similar to their children, and mothers and fathers concurred on the level of similarity they desired between their children and their in-laws. Additionally, parents desired as much similarity between their children and their in-laws as their children desired between themselves and their spouses. Furthermore, we found that mothers and fathers concurred on how they perceive their children across the four desirable traits. Finally, both parents scored their children higher in these traits than their children scored themselves.

Life history (LH) strategies are results of trade-offs that species must make due to inhabiting certain ecological niches. Although it is assumed that, through the process of developmental plasticity, similar trade-offs are made by individuals in response to a certain level of harshness and unpredictability of their local environments, the study results on this matter are not consistent. In LH-oriented psychological research, such inconsistencies are often explained as a consequence of significant individual differences in phenotypical quality and owned resources, which make studying trade-offs difficult due to different costs and benefits of the same behaviors taken by different individuals. To verify if traditional LH patterns can be found among individuals with more comparable qualities, than in the general population, the current study was conducted on a group of male criminal offenders, who are typically associated with a fast LH strategy. Our results did not show any support for either LH trade-offs or unidimensional character of LH strategies in the criminal group studied. The traditional biodemographic LH traits, that we used to assess a LH strategy, merged into three well-known LH dimensions (mating, parenting, and somatic effort) that yet turned out to be entirely independent from each other. Moreover, each LH dimension turned out to be uniquely related to a different aspect of the developmental environment. The implications of the obtained results are discussed.

Despite clear aversion to such labels, one of the most impactful criminological theories is rooted in cognitive science. Gottfredson and Hirschi's general theory has been repeatedly tested, replicated relatively well, and has since reached beyond its original scope to explain other important outcomes like victimization. However, the work never viewed itself as part of a larger scientific landscape and resisted the incursion of neuroscience, cognitive science, and evolutionary theory from the start. This missed opportunity contributes to some of the theory's shortcomings. We begin by considering relevant literatures that were originally excluded and then conduct a new analysis examining the cognitive underpinnings of victimization in a high-risk sample of adolescents. We used the Future of Families and Child Wellbeing Study (n = 3,444; 48% female; 49% Black, 25% Hispanic) which contained sound measures of self-control and intelligence, as well as four types of adolescent victimization. Self-control was robustly associated with all forms of victimization, whereas intelligence had generally no detectable effect. We discuss how these findings fit into a broader understanding about self-control and victimization.

This research explores how biracial facial cues affect racial perception and social judgment. We tested a coalition-signaling hypothesis of biracial cues in two studies conducted in the United States (n = 227) and China (n = 116). From the perspective of intergroup and interpersonal relations theories in social psychology, biracial features would likely be perceived as cues of threat or resource competition. In contrast, we propose an evolutionary hypothesis that biracial facial cues reveal the ancestral history of intergroup alliances between members of two races or ethnic groups. When racial cues are mixed, we predict that biracial individuals may be viewed more positively than other-race or even own-race members who often compete for limited ingroup resources. The participants observed facial images that ranged from 100% Asian to 100% Caucasian, including morphed biracial composites of 30%, 40%, 50%, 60%, and 70% Caucasian or Asian. The participants evaluated each image regarding perceived Caucasianness (Asianness), attractiveness, trustworthiness, health, intelligence, and career prospects. The US and Chinese samples yielded a similar pattern of own-race bias in racial perception and biracial favoritism in social judgment. The social judgment ratings were not correlated with the racial perception scores and were independent of the sex of the participants or biracial images, indicating a coalitional motive, instead of a mating motive, underlying social perception of biracial individuals. Overall, the results suggest that biracial facial features signal a successful genetic admixture and coalition in parental generations and thus increase the trustworthiness and cooperative potential of a biracial person.

The influence of lanthanide biochemistry during methylotrophy demands a reassessment of how the composition and metabolic potential of methylotrophic phyllosphere communities are affected by the presence of these metals. To investigate this, methylotrophs were isolated from soybean leaves by selecting for bacteria capable of methanol oxidation with lanthanide cofactors. Of the 344 pink-pigmented facultative methylotroph isolates, none were obligately lanthanide-dependent. Phylogenetic analyses revealed that all strains were nearly identical to each other and to model strains from the extorquens clade of Methylobacterium, with rpoB providing higher resolution than 16s rRNA for strain-specific identification. Despite the low species diversity, the metabolic capabilities of the community diverged greatly. Strains encoding identical PQQ-dependent alcohol dehydrogenases displayed significantly different growth from each other on alcohols in the presence and absence of lanthanides. Several strains also lacked well-characterized lanthanide-associated genes thought to be important for phyllosphere colonization. Additionally, 3% of our isolates were capable of growth on sugars and 23% were capable of growth on aromatic acids, substantially expanding the range of multicarbon substrates utilized by members of the extorquens clade in the phyllosphere. Whole genome sequences of eleven novel strains are reported. Our findings suggest that the expansion of metabolic capabilities, as well as differential usage of lanthanides and their influence on metabolism among closely related strains, point to evolution of niche partitioning strategies to promote colonization of the phyllosphere.

Feminine honor dictates that women should cultivate a reputation for sexual purity via behaviors such as dressing modestly and maintaining virginity before marriage. The dominant explanation for people's support for feminine honor is that female infidelity threatens male partners' honor. Beyond this, the literature affords little understanding of the evolutionary and psychological origins of feminine honor. We propose that feminine honor functions as an ideological form of mate guarding that is shaped by sexual jealousy and mating strategy. Two correlational studies (N  =  892) revealed support for predictions derived from this ideological mate-guarding account. In Study 1, dispositional jealousy and mating strategy (more monogamous orientation) predicted male participants' support for a mate's (especially a long-term mate's) feminine honor. Moving beyond mate preferences, in Study 2 male and female participants' dispositional jealousy and mating strategy predicted support for feminine honor of women in general. Results applied beyond masculine honor norms, religiosity, political conservativism, and age. These findings enhance the understanding of the origins and maintenance of feminine honor and related norms and ideologies that enable control over women's socio-sexual behavior.

Makeup is a tool that women use to shape their image and gain benefits in both inter- and intrasexual selection. As makeup enables the hiding or enhancing of facial features, it allows women to strategically shape impressions in a given context. It affects interpersonal perceptions, workplace impressions, and can attract romantic partners. However, research has primarily focused on examining everyday makeup use, although the amount and type of makeup can vary depending on the situation and the motivation to make an impression. In two studies, we investigated how the intended amount and application of makeup differ depending on various situational contexts. Specifically, in Study 1 (N = 533), we explored the everyday and party contexts, while in Study 2 (N = 400), we additionally introduced the contexts of mating and threat. The results show that: 1) women intend to put on more makeup in a more diligent way in party contexts compared to everyday contexts, 2) the intended diligence of makeup application is the highest in contexts were women expect an attractive man to be present, and the lowest when a threatening context is introduced, 3) these effects are partially or fully mediated by women's motivation to make an impression, and 4) neither sociosexual orientation nor appearance orientation significantly moderated the obtained effects. Our studies extend previous research on makeup application as an appearance-enhancing or worsening strategy by further investigating the signaling function of women's makeup and its strategic use in various situational contexts. We discuss the results from a functional evolutionary perspective.

The way people perceive the things around them is closely related to living in a complex and challenging social environment. Dichotomous thinking (preference for dichotomy, dichotomous belief, and profit-and-loss thinking), which classifies things in a simple way, can be useful in dangerous and resource-limited environments. However, based on prior studies, people's manner of perceiving things may have developed as a response to the harshness of their childhood environment, and may not be related to their current environment. Therefore, we examined the relationship between individual differences in dichotomous thinking and high-crime environments as indicators of environmental harshness. We assessed dichotomous thinking in 41,284 Japanese residents using large-scale data from the Human Information Database FY19 compiled by NTT DATA Institute of Management Consulting, Inc. The fixed effects regression model showed that, after controlling for age, high-crime environment of the residents' childhood was associated with dichotomous thinking, with the exception of dichotomous belief. On the other hand, their current environment of crime was not associated. In sum, our research suggests that people's dichotomous thinking tendency may be a form of adaptation to the harshness of their childhood environment rather than their current one.