Normative perceptions in relation to substance use and HIV-risky sexual behaviors of college students.

In this study, 410 college students completed a survey assessing their personal substance use patterns and sexual behavior and their perceptions of other students' substance use and sexual behavior. Two parallel sets of questions were presented to reflect the two contextual conditions of being drunk or high versus being not drunk or high. Results indicated that number of recent sexual partners and normative perceptions of HIV-risky sexual behavior were the strongest predictors of personal HIV-risky behavior when not drunk or high. HIV-risky behavior when drunk or high was predicted by personal substance use as well as by number of recent partners and normative perceptions of peer sexual behavior. These findings suggest that HIV-prevention programs for college students should aim to correct overinflated perceptions of other students' high-risk sexual behavior.