Extramarital sex: Prevalence and correlates in a national survey

In the current study, data from a nationally representative sample of 884 men and 1,288 women (1994 General Social Survey, Davis & Smith, 1994) who have ever been married were analyzed with regard to incidence, prevalence, and correlates of extramarital sex (EMS). Men were more likely than women to report ever engaging in EMS (22.7% vs. 11.6%, p < .00001), yet, after correcting the probability value for multiple tests, the apparent gender difference regarding the proportion of respondents who had EMS during the past year was not statistically significant (4.1% vs. 1.7%, p < .008). Interestingly, there was no gender difference in lifetime incidence among respondents younger than 40 years of age. Except for the oldest cohort, lifetime incidence of EMS increased with age for men, whereas for women there was an apparently curvilinear relationship such that lifetime incidence of EMS was greatest among those 30–50 years of age. Those who have ever been divorced, and those with greater attitudinal acceptance of EMS, had higher incidence of EMS compared to those who have not been divorced and those reporting greater disapproval of EMS. With regard to possible gender differences, men and women who denied ever engaging in EMS did not differ in their attitudes about EMS, just as men and women who reported having experienced EMS did not differ in their attitudes. The results are discussed in relation to previous research and unanswered questions left for further investigation.