Yael Sela

Mate Value Discrepancy and Mate Retention Behaviors of Self and Partner

OBJECTIVE This study investigated the relationship between perceived mate value discrepancy (i.e., the difference between an individuals mate value and their partners mate value) and perceived frequency of mate retention performed by an individual relative to his or her partner. METHOD In two studies, participants in long-term, exclusive, sexual, heterosexual relationships reported their own, and their partners, mate value and mate retention. Samples included 899 community members (Study 1) and 941 students and community members (Study 2). RESULTS In Study 1, we documented that individuals with higher self-perceived short-term mate value, and who perceive their partner to have lower (vs. higher) short-term mate value, perform less frequent Benefit-Provisioning mate retention, controlling for the partners Benefit-Provisioning mate retention. In Study 2, we documented that individuals who perceive that they could less easily replace their partner, and who perceive their partner could more (vs. less) easily replace them, perform more frequent mate retention (Benefit-Provisioning and Cost-Inflicting), controlling for the partners mate retention. CONCLUSION These results highlight the importance of assessing perceived discrepancies in mate value (notably, regarding the replaceability of self and partner with another long-term mate) and perceived mate retention behaviors of self, relative to partner, between men and women in long-term relationships.

Is Cunnilingus-Assisted Orgasm a Male Sperm-Retention Strategy?

We secured data from 243 men in committed, sexual, heterosexual relationships to test the sperm retention hypothesis of oral sex. We predicted that, among men who perform cunnilingus on their partner, those at greater risk of sperm competition are more likely to perform cunnilingus until their partner achieves orgasm (Prediction 1), and that, among men who ejaculate during penile-vaginal intercourse and whose partner experiences a cunnilingus-assisted orgasm, ejaculation will occur during the brief period in which female orgasm might function to retain sperm (Prediction 2). The results support Prediction 1 but not Prediction 2. We discuss limitations of the current research and discuss how these results may be more consistent with alternative hypotheses regarding female orgasm and oral sex.

Cross-Cultural Investigation of Male Gait Perception in Relation to Physical Strength and Speed

Previous research documents that men and women can accurately judge male physical strength from gait, but also that the sexes differ in attractiveness judgments of strong and weak male walkers. Women’s (but not men’s) attractiveness assessments of strong male walkers are higher than for weak male walkers. Here, we extend this research to assessments of strong and weak male walkers in Chile, Germany, and Russia. Men and women judged videos of virtual characters, animated with the walk movements of motion-captured men, on strength and attractiveness. In two countries (Germany and Russia), these videos were additionally presented at 70% (slower) and 130% (faster) of their original speed. Stronger walkers were judged to be stronger and more attractive than weak walkers, and this effect was independent of country (but not sex). Women tended to provide higher attractiveness judgments to strong walkers, and men tended to provide higher attractiveness judgments to weak walkers. In addition, German and Russian participants rated strong walkers most attractive at slow and fast speed. Thus, across countries men and women can assess male strength from gait, although they tended to differ in attractiveness assessments of strong and weak male walkers. Attractiveness assessments of male gait may be influenced by society-specific emphasis on male physical strength.

The myth of the myth of martyrdom

Lankford asserts that suicide terrorism is attributable to suicidality. We argue in this commentary that this assertion is not well supported theoretically or empirically. In addition, we suggest that failure to acknowledge religious beliefs as motivationally causal for suicide terrorism may place innocent people at risk of murder in the service of political correctness and multiculturalism.

Romantic attachment and mate retention behavior: The mediating role of perceived risk of partner infidelity

Previous research indicates that the romantic attachment dimensions of anxiety and avoidance are associated with performance frequency of Benefit-Provisioning and Cost-Inflicting domains of mate retention. The current research aimed to replicate previous findings in a non-Western sample (Iran, Study 1) and to extend this research by investigating the mediating role of perceived risk of partner infidelity (Study 2). Studies 1 and 2 tested the hypotheses that attachment anxiety is positively associated with mate retention and that attachment avoidance is negatively associated with mate retention. Study 2 tested the hypothesis perceived risk of partner infidelity mediate the association between attachment dimensions and mate retention domains. Results of Studies 1 and 2 replicated previous research and also revealed that perceived risk of partner infidelity mediated the association between attachment anxiety, specifically, and mate retention. The current research advances our understanding of romantic attachment from an evolutionary psychological perspective.

Consideration of Cosmetic Surgery As Part of Women’s Benefit-Provisioning Mate Retention Strategy

Individuals perform mate retention behaviors to minimize the risk of partner infidelity and relationship dissolution. The current study investigates whether consideration of cosmetic surgery can be conceptualized as part of a broader strategy of mate retention for women, but not men. We hypothesized that women’s consideration of cosmetic surgery would be positively associated with performance frequencies of Benefit-Provisioning and Cost-Inflicting mate retention behaviors. We recruited 203 individuals (54% women) in committed heterosexual relationships from Tehran, Iran. Results indicate a positive association between consideration of cosmetic surgery and Benefit-Provisioning mate retention behaviors for women, but not men. There was no association between consideration of cosmetic surgery and Cost-Inflicting mate retention behaviors. Women therefore may consider cosmetic surgery to improve their physical attractiveness as part of a Benefit-Provisioning strategy to retain a long-term mate. We discuss limitations of the study and highlight future directions for research from an evolutionary perspective.

Endorsement of Social and Personal Values Predicts the Desirability of Men and Women as Long-Term Partners

A prospective romantic partner’s desirability as a long-term partner may be affected by the values that he or she endorses. However, few studies have examined the effects of “values” on a person’s desirability as a long-term partner. We hypothesized that individuals who endorse social values (vs. personal values) will be perceived as more desirable long-term partners (Hypothesis 1) and that the endorsement of social values will be especially desirable in a male (vs. female) long-term partner (Hypothesis 2). The current study employed a 2 (sex of prospective partner: male vs. female) × 2 (values of prospective partner: personal vs. social) × 2 (physical attractiveness of prospective partner: unattractive vs. highly attractive) mixed-model design. Participants were 339 undergraduates (174 men, 165 women), with ages varying between 18 and 33 years (M = 19.9, SD = 3.6), and mostly in a romantic relationship (53.7%). Participants reported interest in a long-term relationship with prospective partners depicted in four scenarios (within subjects), each varying along the dimensions of values (personal vs. social) and physical attractiveness (unattractive vs. highly attractive). Individuals endorsing personal values (vs. social values) and men (vs. women) endorsing personal values were rated as less desirable as long-term partners. The current research adds to the partner preferences literature by demonstrating that an individual’s ascribed values influence others’ perceptions of desirability as a long-term partner and that these effects are consistently sex differentiated, as predicted by an evolutionary perspective on romantic partner preferences.

Do Men Produce Higher Quality Ejaculates When Primed With Thoughts of Partner Infidelity

Sperm competition theory can be used to generate the hypothesis that men alter the quality of their ejaculates as a function of sperm competition risk. Using a repeated measures experimental design, we investigated whether men produce a higher quality ejaculate when primed with cues to sperm competition (i.e., imagined partner infidelity) relative to a control prime. Men (n = 45) submitted two masturbatory ejaculates—one ejaculate sample for each condition (i.e., sperm competition and control conditions). Ejaculates were assessed on 17 clinical parameters. The results did not support the hypothesis: Men did not produce higher quality ejaculates in the sperm competition condition relative to the control condition. Despite the null results of the current research, there is evidence for psychological and physiological adaptations to sperm competition in humans. We discuss methodological limitations that may have produced the null results and present methodological suggestions for research on human sperm competition.

Dishonest individuals request more frequent mate retention from friends

Coalitional mate retention (CMR) occurs when individuals request assistance from a friend to minimize the risk of partner infidelity. We secured reports from men and women in a committed, heterosexual relationship to investigate associations between CMR requests and the sex and personality traits of individuals who request CMR and the sex of their friends. Consistent with our hypothesis, individuals scoring higher in Honesty–Humility requested CMR less frequently. We also documented that individuals higher in Extraversion and lower in Conscientiousness requested CMR more frequently. We address limitations of the research and future research directions, including tests of the hypothesis that CMR involves duplicitous behaviors that are less typical of individual mate retention.

A Moral Guide to Depravity: Religiously Motivated Violence and Sexual Selection

Relying on religion as the basis of one’s morality is problematic. Although religion can motivate positive behaviors and cooperation, it also motivates and exacerbates violence in particular contexts, arguably by being shaped by preexisting mechanisms in evolved human psychology. First, we provide a brief overview of human sexual selection from an evolutionary psychological perspective. Second, we discuss how and why an evolutionary perspective and, in particular, the concepts of intersexual and intrasexual competition may be useful in understanding religiously motivated violence. Third, we present an overview of the research addressing several types of religiously motivated violence, such as mate guarding and controlling behaviors, wife beating and uxoricide, honor killing, child abuse and filicide, male and female genital mutilation, suicide, group violence and war, and terrorism (including suicide terrorism). We highlight the potential advantages that religiously motivated violence may have provided ancestrally within a sexual selection theoretical framework, and we conclude with suggestions for future research.