Evolutionary Psychology最新文献

Intimate relationships frequently come to an end, and in the current research, we have endeavored to examine how individuals would potentially react in the scenario where their intimate partner decides to terminate a relationship they wish to continue. More specifically, employing open-ended questionnaires on a sample of 219 Greek-speaking participants, we identified 79 possible reactions. Subsequently, using close-ended questionnaires on a sample of 442 Greek-speaking participants, we categorized these reactions into 13 broad factors. Participants indicated that they were more likely to feel sadness, inquire of their departing partners why they wish to end the relationship, and attempt to divert their thoughts elsewhere to avoid dwelling on the end of the relationship. Men indicated a higher likelihood than women to seek revenge sex, although significant sex differences were not observed in other reactions. Furthermore, we classified these 13 factors into three broader domains. The highest-rated domain was "Accept and forget," followed by "Sadness and depression," and "Physical and psychological aggression." These findings could enable us to gain a better understanding of the process of relationship dissolution, and could potentially be employed to identify and prevent reactions that may have harmful repercussions for the individuals involved in the relationship.

Mating and labor markets are fundamental drivers of societal dynamics. Yet, equity of access to these domains differs between the sexes due to numerous biological, economic, psychological, and socio-cultural factors. These inequalities and their impacts can accentuate perceptions, preferences, and behaviors of males and females in different ways. Utilizing a large cross-sectional sample of those currently engaged in the Australian mating market (n = 1072 online daters), we explored the impact of sex and individual differences on the perceptions of men's ease of access to a decent job in the labor market (opportunity), women's economic dependence on men (economic inequality), and relative reproductive opportunity (dating access) for both sexes. Our study identifies both sex differences and symmetries in socio-economic factors (such as education level and having offspring) correlating with the perceptions of both economic and dating market access for Australian online daters. Additionally, key resource endowment indicators (income and unemployment) also reflect differences in both sexes' perceptions of both access and gender equity. That said, our study finds that perceptions of access to both (economic and mating) markets shows far greater variation based on biological age (especially for women) than any other factor.

Life history theory suggests that in harsh, unpredictable environments, individuals may benefit from adopting a fast life history strategy. This may involve experiencing boredom more frequently and intensely as an adaptive mechanism to seek novel stimuli, potentially increasing the number of sexual partners and offspring. This study explored the relationship between trait boredom-a chronic characteristic of feeling bored-and fast life history strategies. Our findings confirmed a positive association between boredom proneness and fast life history strategies at both individual and country levels. In Study 1, fast life history strategy was positively correlated with boredom proneness and mediated the relationship between perceived childhood support/resources and boredom proneness. In Study 2, we conducted a multi-level analysis using secondary data from 15 countries. The results showed that countries with higher boredom proneness scores showed more indicators of faster life history strategies. These results suggest that trait boredom may be a functional characteristic of fast life history strategists. This study is the first empirical investigation of trait boredom within a life history framework, highlighting trait boredom's functional role from evolutionary and ecological perspectives.

In this article, we examine the relations between extreme environmental harshness during childhood and personal fertility ideals in African students. The study is informed by biological models of predictive adaptive responses (PAR) for individual reproductive schedules in the context of life history theory (LHT). Following theoretical models of external and internal environmental cues, we tested whether war and starvation during childhood differentially predict African students' personal fertility ideals in terms of their desired number of children and their desired age of first parenthood. The data were collected in eight different countries from sub-Saharan Africa with an overall sample size of N = 392. Standardized effect estimates were obtained using a Bayesian approach. The results suggest that war and starvation are predictive of the desired number of children, but not of the desired age of first parenthood. Moreover, the effect estimates varied considerably between females and males, indicating possible interactions between the two independent variables depending on the students' sex. Furthermore, we found a small negative correlation between the desired number of children and the desired age of first parenthood, providing only weak support for a clustering of the two variables on a slow-fast continuum. The results are discussed in light of current models of individual life histories in humans.

Evidence is abundant that evolution by selection has produced sex differences in the design of adaptations to solve the problems surrounding reproduction. A prime example is the design of human jealousy, which research suggests is triggered by distinct evoking acts that are specific challenges for women and men in their exclusive reproductive bond. It follows that jealousy would be directed toward driving away interlopers who could potentially threaten the bond with the romantic partner or increase mate retention efforts in response to sex-specific threats. To explore this possibility, we use as a methodological innovation an economic game for the evocation of jealousy. With a modified dictator game, we showed men and women in a committed relationship, conditions in which the partner or an intrasexual rival allocates money to (investing condition), or obtains money from (receiving condition), the partner or an opposite sex third party that they recently met. A sample of 56 heterosexual couples (n = 112) participated in a laboratory setting. Our results show the different scenarios of this dictator game exerted the expected evocation of jealousy (controlling individual differences), with women being more jealous by the partner's allocation of resources to a rival, and men reporting slightly more jealousy by their partner receiving money from a rival. We discuss the implications of this method to advance the comprehension of the adaptive function of sex differences in jealousy, the use of economic games, and possible modifications to improve the similarity of the game to a real assessment of actual male jealousy.

In four preregistered studies, we tested implications from a cooperation model that explains victim-blaming as a strategic move, as a way for people to avoid the costs of helping victims (who seem to be unpromising cooperation partners) without paying the reputational cost of being seen as ungenerous, reluctant cooperators. An implication of this perspective is that, if an individual is identified as a poor cooperation prospect to start with, people would be likely to blame that individual for his/her own misfortune, notably by suggesting that the victim was negligent. The four studies presented here support this interpretation, as participants attributed more negligence to an accident victim if that victim had been initially described as less prosocial, either because they denied benefits to others or because they created costs for others. These results are consistent with a familiar result, that people blame victims more if they feel (or want to be seen as) more socially distant from that victim. The present studies may offer a simple, cooperation-based account of this and other aspects of victim-blaming.

Recent research has examined digital dating abuse through an evolutionary lens, finding people who report intrasexual competitiveness engage in digital dating abuse. Here, we replicated this finding and extended the literature by examining the role of the Big Five personality traits in the perpetration of digital dating abuse, which, to our knowledge, has not been examined in relation to digital dating abuse (n=280). This paper reports findings showing intrasexual competitiveness positively predicts the perpetration of digitaldating abuse; whereby high intrasexual competition is related to high levels of digital dating abuse. Agreeableness was a negative predictor of digital dating abuse; whereby high agreeableness was related to low perpetration of digital dating abuse. Our findings extend the literature exploring digital dating abuse through an evolutionary lens.

We were interested in how people in a romantic relationship would perceive the intelligence of their partners who have high or low trait anger. Specifically, we referred to the tension between compassion (low anger) and competence (high intelligence) in mate choice. Some evolutionary theories suggest that mating might be considered a bargaining process between these two higher-order attributes. Our study involved 148 heterosexual couples in romantic relationships. We measured the relationship between relationship satisfaction, trait anger, objective intelligence, self-assessed intelligence, and subjectively assessed partners' intelligence. We found that angrier men were less satisfied in their romantic relationship than those men who were less angry, and their partners were also less satisfied in the relationship. Additionally, women perceived angrier men as less intelligent, an effect that remained after controlling for men's objective intelligence. Lastly, we found that women's perception of their partner's intelligence mediated the link between men's anger and relationship satisfaction for both sexes. Our findings suggest that both anger and intelligence play important roles in romantic relationship functioning, consistent with evolutionary theories that emphasize the value of competence (i.e., intelligence) and compassion (i.e., low anger) in romantic partners. Furthermore, our study highlights the importance of women's perception of their partner's intelligence in determining the quality of the relationship.

Red color signals dominance in both animals and humans. This study investigated whether a red background color influences the perception of dominance in human faces and geometric shapes. The facial stimuli consisted of computer-generated faces, quantitatively morphed into nine levels of dominance, ranging from less dominant to more dominant. This included East-Asian female faces in Experiment 1 and male faces in Experiment 2. The face stimuli were presented against three background colors: red, green, and gray. Participants were instructed to categorize the faces as either obedient or dominant by pressing the corresponding labeled keys. The results showed that faces were more likely to be perceived as dominant when presented against a red background than against green or gray backgrounds, for both female and male faces. Additionally, two questionnaire surveys showed that the perception of dominance also increased for shapes presented against a red background. However the effect of red diminished in the absence of the actual perception of the color red. These results suggest that the perception of dominance in both human faces and objects is enhanced by the presence of red, possibly due to evolutionary factors related to the perception of red.

Jealousy may have evolved to motivate adaptive compensatory behavior in response to threats to a valued relationship. This suggests that jealousy follows a temporal sequence: A perceived relational threat induces state feelings of jealousy which in turn motivates compensatory behavior, such as mate retention effort. Yet to date, tests of this mediation model have been limited to cross-sectional data. This study is the first to experimentally test this theoretical model. Men and women (N = 222) who were currently in committed romantic relationships were primed with an imagined partner infidelity (versus control) scenario. Participants then completed measures of state jealousy and intended mate retention behavior. Results found that those primed with the infidelity threat scenario experienced an increase in state jealousy, which in turn predicted more intended benefit-provisioning and cost-inflicting mate retention. Findings suggest that jealousy mediated the relationship between infidelity threat and intended mate retention behavior, supporting the evolutionary account of state jealousy.