The Science of Two-Timing: The State of Infidelity Research

Abstract

This article provides an overview of research on infidelity in an effort to synthesize past studies and orient future studies. It begins with infidelity estimates, followed by a synopsis of evolutionary explanations prominent in both popular and academic writing. Despite the potential utility of evolutionary arguments, I argue that infidelity needs to be understood as a dynamic social process subject to influence by the context in which it is embedded. This conceptualization urges scholars to attend to the component, proximate, and psychological factors that affect one’s decision to engage in infidelity. Accordingly, I categorize empirical infidelity research in this manner. I conclude by addressing new developments and avenues for future research.