Experimental activation of anti-cuckoldry mechanisms responsive to female sexual infidelity

Recent research indicates that men may have evolved mechanisms dedicated to detecting and responding to the risk of partner infidelity. Because activation of these “anti-cuckoldry” mechanisms depends on partner infidelity, or the perception of partner infidelity, existing evidence for such mechanisms relies on correlational data. The current study tests several predictions regarding men’s anti-cuckoldry mechanisms in an experimental design. As predicted, the results demonstrated: (1a) experimental activation of men’s anti-cuckoldry mechanisms by presenting them with a vignette depicting a female partner’s sexual infidelity; (1b) no activation of men’s anti-cuckoldry mechanisms by presenting them with a vignette depicting a sexual encounter without female infidelity; (2) experimental activation of men’s anti-cuckoldry mechanisms was influenced by their perceived risk of partner infidelity; and (3) women were not influenced by the partner infidelity manipulation.

► This study used an experimental design to test anti-cuckoldry mechanisms.
► Men and women were exposed to descriptions of in-pair or extra-pair sexual activity.
► The manipulation activated anti-cuckoldry mechanisms in some men.
► Mechanisms only activated in men with self-perceived risk of partner infidelity.
► The manipulation did not affect women.