"Extramarital sex has long defied serious examination." Kinsey was unable to get his subjects to fully cooperate on this critical aspect of their sexual life. Noted sociologist Dr. Lewis Yablonsky has conducted the first major survey, in which he probes the intimate feelings, motivations and reactions of over 1000 men to establish the many provocative questions raised by and about "extra-sex." The vivid, in-depth case histories in The Extra-Sex Factor detail in the men's own words why they decide to have affairs, how they conduct them, and how they relate them to their marriage. The candor of the men is matched by Yablonsky's startling conclusions, which reveal the degree to which society has ignored the realities of male sexuality.