Unfaithful Minds: The Science and Psychology of Infidelity

Every year, millions of people are unfaithful in their romantic relationships — risking the integrity of their families, finances, and reputations. In surveys, approximately half of unfaithful individuals report that they were happy with their primary relationships when their affairs began. Why would so many people engage in behavior that’s so obviously self-defeating?

Couple therapists and self-help books tell us that infidelity results from familiar factors – like stress, poor communicatio...