About 20 percent of heterosexual married men, and 15 percent of married women, cheat on their spouse, even though half of them say they are very happy with their partner. In his book, “Infidelity: Why Men and Women Cheat,” psychiatrist Kenneth Rosenberg explores the neuroscience and psychology of adultery. Rosenberg says people are driven to cheat not just by biological urges, but because they are lured by "intrigue, excitement, desire, a quest for validation and a sexualized attempt to prove one’s power over others."
The Science Behind Infidelity
Kenneth Paul Rosenberg, MD, Addiction Psychiatrist and Clinical Associate Professor of Psychiatry at Weill Cornell Medical College and New York Presbyterian Hospital, author of "Infidelity: Why Men and Women Cheat"