Residential status moderates the association between gender and risky sexual behavior.

College students' academic performance, residential status, class rank, and gender were assessed as predictors of risky sexual behavior. All predictors were examined under two different substance use contexts, that of being 'drunk or high' and 'not drunk or high'. Results indicated that gender moderated the association between residential status and risky sex, such that males living on-campus engaged in more frequent casual sex than males living off-campus. The casual sex frequency for females did not vary as a function of residential status. The importance of studying the link between college-based environmental variables and risky sexual behavior was emphasized.