Alcohol And Cannabis Co-Use And Social Context As Risk Pathways To Sexual Assault

Objective: Simultaneous use of alcohol in combination with cannabis (“co-use”) is common among young adults, and associated with myriad consequences. Yet no studies have examined how co-use may confer vulnerability for sexual assault (SA). Further, though both co-use and SA commonly occur in social settings, there have been no examinations of the role that co-use may play in the broader social context that leads to assault risk. This was the objective of the present study. Method: In a community sample of young adult women, (N = 174; Mage = 22.6), we examined risk pathways to SA, guided by Routine Activities Theory (Mustaine & Tewksbury, Criminal Justice Review, 2002, 27, 89). Using a longitudinal burst design with 27 daily assessments across 1 year, women reported on their own and others’ alcohol, cannabis, and co-use, and on social context and assault experiences. Results: Multilevel path model results showed alcohol and cannabis co-use to confer unique risk for SA, above and beyond the influence of use of either substance alone. Intoxication and components of the co-use social context (proximity to offenders) mediated this risk. Importantly, we observed a key role for co-use by others within the social context in assault risk. Conclusions: This study adds to the literature by providing a nuanced and contextual account of how cannabis-alcohol co-use may lead to assault vulnerability in young adult women.