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Objective: Among two-year college students, alcohol and marijuana use, related consequences, and risk factors for use are not well understood. We examined differences between two- and four-year students in alcohol and marijuana use, consequences, and perceived descriptive norms, and explored whether two-year status moderated associations between norms and use. Participants: Data were drawn from a cross-sectional subsample of two- and four-year students aged 18–23 (n = 517) participating in a longitudinal study on alcohol use. Results: Four-year students reported greater alcohol use and consequences than two-year students; two-year students reported greater marijuana use than four-year students. Perceived alcohol and marijuana norms were positively related with use; two-year status did not moderate these associations. Conclusions: Perceived alcohol and marijuana norms function similarly for two- and four-year students in terms of associations to actual use. Adapting normative interventions for two-year students may be an effective strategy for reducing high-risk use among this underserved population. [ABSTRACT FROM AUTHOR]

Emerging research suggests morning cannabis use may be associated with using more cannabis and experiencing more cannabis-related consequences. This paper examined whether months when young adults reported morning cannabis use (use between 6:00AM and 12:00PM) were associated with cannabis use frequency, negative cannabis-related consequences, and changes in cannabis use disorder (CUD) symptoms. Participants were 778 young adults (M age =21.11 years, 58.5% female) enrolled in a longitudinal study on substance use and social role transitions. Eligible participants were 18–23 years old at screening and reported past-year alcohol use. Participants completed a baseline survey, 24 consecutive monthly surveys, and a follow-up survey 30 months after baseline. Aims were tested using multilevel models and multiple regression. Analyses were limited to cannabis use months (N =4719; 28.9% of sampled months) and participants who reported cannabis use at least once (N =542; 69.7% of all participants). Morning use was reported in 12.3% of cannabis use months and at least once by 23.6% of participants who reported using cannabis. Relative to non-morning use months, morning use months were associated with greater cannabis use frequency and more negative consequences. However, the association between morning use and negative consequences was not statistically significant after controlling for cannabis use frequency. The percentage of cannabis use months with morning use was positively associated with increased CUD symptoms at the 30-month follow-up, relative to baseline. Morning cannabis use may be a useful marker of high-risk cannabis use and may contribute to the maintenance and worsening of CUD over time. • Morning cannabis use was reported by 23.6% of young adult participants. • Morning cannabis use was reported in 12.3% of cannabis use months. • Morning use months were associated with greater cannabis use frequency. • Morning use predicted changes in cannabis use disorder symptoms. [ABSTRACT FROM AUTHOR]