SLUTOLOGY: Attractiveness and Spousal Infidelity as Predictors of Infidelity in Couples from Five Cultures. “Another study of American women found that when asked face-to-face about number of sexual intercourse partners in the past year, 1.08% of married women reported infidelity whereas when the same question was asked through a computer questionnaire, 6.13% of the married women reported having sexual intercourse with more than one man.”