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Using Triandis's theory of interpersonal behavior, we analyzed factors related to casual sex among Canadian university students on a spring break vacation. Two samples were obtained: 151 students completed a questionnaire before a spring break trip to Daytona Beach, Florida and 681 completed a questionnaire during or immediately following the vacation. More men than women intended to have casual sex but similar percentages of men (15%) and women (13%) had actually engaged in casual sex. In ordinary least squares regression, expectation of participation in spring break activities, social norms expressed through peer group influences, and personal attitudes explained 74% of the variance in the intentions to engage in casual sex. In logistic regression, intentions and participation in spring break activities correctly classified 80% of the men into those who did and did not engage in casual sex. Agreements formed with friends about casual sex and the proportion of friends who participated in coitus on spring break correctly classified 88% of women.
Maticka‐Tyndale et al. (Sat,) studied this question.