Details

Autor(en) / Beteiligte

• Pham, Michael N.
• DeLecce, Tara
• Shackelford, Todd K.

Titel

Sperm competition in marriage: Semen displacement, male rivals, and spousal discrepancy in sexual interest

Ist Teil von

• Personality and individual differences, 2017-01, Vol.105, p.229-232

Ort / Verlag

Oxford: Elsevier Ltd

Erscheinungsjahr

2017

Quelle

Applied Social Sciences Index & Abstracts (ASSIA)

Beschreibungen/Notizen

• Non-human males attend to the presence of potential sexual rivals in the local environment to assess sperm competition risk, and adjust accordingly the deployment of sperm competition tactics (e.g., performing semen-displacing copulatory behaviors). We extend this research to humans using data from 45 married couples who completed questionnaires in a laboratory. We found that husbands whose wife spent more time with her male coworkers and male friends (i.e., potential sexual rivals) performed more semen-displacing copulatory behaviors at the couple's most recent copulation. We also found that performance of semen-displacing copulatory behaviors correlated with a novel cue to sperm competition risk: the discrepancy between the husband's sexual interest in his wife and her sexual interest in him. We also tested and refuted an alternative hypothesis that men adjust their copulatory thrusting to facilitate their partner's orgasm. Discussion highlights the novel contributions of the current research and notes limitations that can be addressed by future research. •Semen-displacing copulatory behaviors are explored in married couples.•The time wives spend with other men and husbands' sexual behavior are related.•Men's sexual behaviors are related to differences in sexual interest between spouses.