Prepartying and incapacitated rape: Is drinking a risk factor or an outcome?

Background Incapacitated rape (IR) is common in college and has been linked to heavier post‐assault drinking and consequences, including blackouts. Following IR, college students may adjust their drinking in ways meant to increase perceived safety, such as enhancing situational control over one's drinks through prepartying, which is drinking before going out to a main social event. Although it is possible that prepartying could influence risk related to IR, it is unclear whether or how prepartying and IR are associated. Methods To address these gaps, we examined prepartying as both a risk factor and a consequence of IR, including the reasons for prepartying. Across two studies (Study 1 N = 1074; Study 2 N = 1753) of college women and men, we examined associations between IR and prepartying motives, alcohol consumption, and alcohol‐related blackouts. Results Within the cross‐sectional Study 1, negative binomial regressions revealed that having a history of IR was associated with more alcohol consumption and blackouts when prepartying. In a multivariate model, past‐year IR was associated with preparty motives related to interpersonal enhancement, intimate pursuit, and barriers to consumption, but not situational control. Within the prospective Study 2, a path model revealed that preparty drinking was a prospective predictor of IR in the following year, but past‐year IR did not predict subsequent prepartying. Conclusions Findings revealed a robust link between recent history of IR and prepartying regardless of gender. Prepartying was a prospective risk factor for subsequent IR. Although more research in this area is needed, addressing prepartying in alcohol interventions may contribute to the prevention of negative outcomes, including sexual assault. Associations between incapacitated rape (IR) and prepartying (drinking before a main social event) were examined in two studies of college drinkers. Within the cross‐sectional Study 1, participants with a history of IR reported more preparty drinking and greater motivation to preparty for interpersonal enhancement, intimate pursuit, and barriers to consumption, but not situational control. Within the prospective Study 2, prepartying was a prospective risk factor IR in the following year, but IR did not predict subsequent prepartying.