Female attractiveness mediates the relationship between in-pair copulation frequency and men’s mate retention behaviors

More attractive women are more likely to be pursued as mates by men other than their long-term partner and, therefore, to place their partner at greater risk of cuckoldry (investing unwittingly in a child to whom he is genetically unrelated). Men partnered to more attractive women perform more mate retention behaviors – behaviors designed to thwart a woman’s infidelity. With greater risk of female infidelity, men may perform additional anti-cuckoldry tactics such as frequent in-pair copulations (IPC). We secured self-reports from 277 men in a long-term relationship and investigated: (1) the relationship between female partner’s attractiveness and IPC frequency and (2) the mediating role of female partner’s attractiveness on the relationship between IPC frequency and male mate retention behaviors. The results indicated that female attractiveness: (1) predicts IPC frequency and (2) partially mediates the relationship between IPC frequency and male mate retention behaviors. The discussion addresses the mediated relationship, notes limitations of the research, and highlights directions for future research.