Psychological Adaptation to Human Sperm Competition

Shackelford, Todd K.; LeBlanc, Gregory J.; Weekes–Shackelford, Viviana A.; Bleske-Rechek, April; Euler, Harald Α.; Hoier, Sabine

doi:10.1007/0-387-28039-1_13

Cited by 34 publications

(97 citation statements)

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“…As women's infidelity was a reliable predictor of men's sexual coercion in both studies, we argue that this finding is consistent with sperm competition theory and that it adds to a rapidly growing literature on human sperm competition (e.g., Baker & Bellis, 1993;Camilleri & Quinsey, 2007;Gallup & Burch, 2004;Gallup et al, 2003;Goetz et al, 2005;Kilgallon & Simmons, 2005;Klusmann, 2006;Pound, 2002;Shackelford, Goetz, McKibbin, & Starratt, 2007;Shackelford et al, 2002;Smith, 1984; for a review, see .…”

Section: Discussionsupporting

confidence: 64%

Sexual Coercion in Intimate Relationships: A Comparative Analysis of the Effects of Women’s Infidelity and Men’s Dominance and Control

2008

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Researchers studying the proximate (or immediate) causes of sexual coercion have proposed that partner rape is motivated by a man's attempt to dominate and control his partner and that this expression of power is the product of men's social roles. Researchers studying the ultimate (or evolutionary) causes, in contrast, have proposed that partner rape may function as an anti-cuckoldry tactic, with its occurrence related to a man's suspicions of his partner's sexual infidelity. In two studies, we collected data relevant to both perspectives to explore how these variables interact with men's sexual coercion in an intimate relationship. Regression analyses from Study 1 (self-reports from 256 men) and Study 2 (partner-reports from 290 women) indicated that men's sexual coercion of their partners was consistently predicted by female infidelity and men's controlling behavior, suggesting that both variables are necessary to explain men's sexual coercion. Discussion addressed limitations of the current research and highlighted the importance of integrating multiple levels of analysis when studying men's sexual coercion of their intimate partners.

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Section: Discussionsupporting

confidence: 64%

Sexual Coercion in Intimate Relationships: A Comparative Analysis of the Effects of Women’s Infidelity and Men’s Dominance and Control

2008

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“…These flyers stated only that volunteers were needed for a “study on romantic relationships.” Contact information was provided on the flyers. We estimated that 20% of participants were nonstudents drawn from the community (e.g., Shackelford et al, 2002). Florida Atlantic University’s Institutional Review Board reviewed and approved this study for ethical compliance.…”

Section: Methodsmentioning

confidence: 99%

Do Women Pretend Orgasm to Retain a Mate?

2011

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The current study tested the hypothesis that women pretend orgasm as part of a broader strategy of mate retention. We obtained self-report data from 453 heterosexual women (M age, 21.8 years) in a long-term relationship (M length, 32.8 months) drawn from universities and surrounding communities in the southeastern United States. The results indicated that (1) women who perceived higher risk of partner infidelity were more likely to report pretending orgasm, (2) women who reported greater likelihood of pretending orgasm also reported performing more mate retention behaviors, and (3) women’s perceptions of partner infidelity risk mediated the relationship between pretending orgasm and the performance of cost-inflicting mate retention behaviors, such as Intersexual Negative Inducements (“Flirted with some one infront of my partner”) and Intrasexual Negative Inducements (“Yelled at a woman who looked at my partner”). Thus, pretending orgasm may be part of a broader strategy of mate retention performed by women who perceive higher risk of partner infidelity.

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“…Goetz et al (2005) secured men's ratings of their partner's attractiveness and her personality traits to assess their sperm competition risk. Men use other cues to estimate sperm competition risk, including the proportion of time they spend apart from their partner since the couple's last copulation (Shackelford et al, 2002, the time she spends with male friends (Pham and Shackelford, 2013c), and her previous infidelity (McKibbin, Starratt, Shackelford, and Goetz, 2011). Future research could benefit from securing data regarding other cues to sperm competition risk when investigating men's sexual behaviors.…”

Section: Testing the Ejaculate Adjustment Hypothesismentioning

confidence: 98%

“…In humans, female infidelity is the most common context for sperm competition (Baker and Bellis, 1993a;Shackelford, Goetz, McKibbin, and Starratt, 2007;Shackelford et al, 2002;Smith, 1984). Men whose regular partner commits infidelity are at risk of cuckoldry-the unwitting investment of resources into genetically unrelated offspring to whom he is genetically unrelated.…”

Section: Introductionmentioning

confidence: 99%

Oral Sex, Semen Displacement, and Sexual Arousal: Testing the Ejaculate Adjustment Hypothesis

et al. 2013

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Male Indian Flying Foxes (Pteropus giganteus) that spend more time performing oral sex on a female also spend more time copulating with her. In humans, men who spend more time copulating with their regular partner also perform more "semen-displacing" copulatory behaviors (e.g., deeper, more vigorous penile thrusting). We investigated whether men who spend more time performing oral sex on their regular partner also spend more time copulating with her and perform more semen-displacing copulatory behaviors. We proposed and tested the ejaculate adjustment hypothesis for men's copulatory behaviors: Men adjust their copulatory behaviors to increase their sexual arousal and consequent ejaculate quality, thereby increasing their chances of success in sperm competition. Two hundred and thirty-three men in a committed, heterosexual relationship responded to questions about their copulatory behavior and sexual arousal during their most recent sexual encounter with their long-term partner. The results indicated that men who spend more time performing oral sex on their partner also spend more time copulating with her, perform more semen-displacing copulatory behaviors, and report greater sexual arousal. We discuss limitations to the current research and highlight the heuristic value of sperm competition theory for understanding human sexual behaviors.

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Psychological Adaptation to Human Sperm Competition

Cited by 34 publications

References 0 publications

Sexual Coercion in Intimate Relationships: A Comparative Analysis of the Effects of Women’s Infidelity and Men’s Dominance and Control

Sexual Coercion in Intimate Relationships: A Comparative Analysis of the Effects of Women’s Infidelity and Men’s Dominance and Control

Do Women Pretend Orgasm to Retain a Mate?

Oral Sex, Semen Displacement, and Sexual Arousal: Testing the Ejaculate Adjustment Hypothesis

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