Objective: Examine the proportion of students with rapid firearm access and associations with recent alcohol and marijuana use. Participants: Cross-sectional data from college freshmen (n = 183) in 2020 who participated in the "Mason: Health Starts Here" study. Methods: Using logistic regression, associations were examined between past…

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…

Adolescent substance use is a top national public health concern with approximately 50% of youth having tried an illicit substance by the end of high school. The transition to high school is a critical point for substance use initiation. Despite this fact, there is relatively limited research looking at factors that can protect students from…

Objective: The purpose of this study was to examine patterns of concurrent cannabis and other substance use and their differential associations with cannabis-related problems and academic outcomes in college students. Participants: Participants were undergraduate students (N = 263; M age = 19.1 years; 61.2% female) who were eligible if they used…

Objective: The role of simultaneous alcohol and marijuana (SAM) use in the experience of blackouts among college students is unclear. To clarify discrepancies, the current study evaluated whether the association between SAM user status and blackouts was moderated by high-intensity drinking (HID). Participants and Methods: College students (N =…

Objective: Electronic cigarette use represents an important college health concern. This investigation assessed demographic and behavioral correlates associated with actual and perceived e-cigarette use among a national sample of American college students. Methods: Respondents (n = 19,861) comprised college students from over 40 distinct American…

Given the prevalence of alcohol and cannabis co-use among college students, prevention for co-use is crucial. We examined hypothetical receptiveness to substance-specific interventions among students who reported co-use. Students who use alcohol and cannabis were more receptive to alcohol interventions than cannabis interventions. Campus…

This study investigated whether noticing cannabis education campaigns was associated with increased cannabis risk perceptions in Canada's three territories following non-medical cannabis legalization. Data were from the Cannabis Policy Study in the Territories, including 2452 participants, age [greater than or equal to]16 years residing in Yukon,…

Background: Tobacco use continues to be a leading cause of morbidity and mortality in the United States. Rates of tobacco use among college students remain steady with one in ten using some form of tobacco. Specific social and demographic correlates to use are needed to effectively address continued use. Purpose: The purpose of the present study…

The present study aimed to test if perceived pubertal timing was related to marijuana and alcohol use through deviant peer affiliation. Additionally, we examined if the deviant peer pathway was moderated by impulsiveness, gender, or both. Data were collected from 342 youth, most of whom had a family history of substance use disorder. Youth…

Background: To determine if school engagement is a viable target for early prevention of adolescent substance use, this study investigated whether school engagement in early adolescence (ages 12-14) is a cause of alcohol and cannabis use during middle to late adolescence (ages 15-19). Methods: To facilitate causal inference, inverse probability of…

Many studies have been conducted in Africa on the use of psychoactive substances among high school students. However, few studies have examined the psychological mechanisms underlying this consumption. Grounded in self-determination theory (SDT), the present study explored the moderating role of the frustration of basic psychological needs on the…

Objective: Young adulthood (18-25) is the peak age for substance use, but friends who engage in positive behaviors may be protective. The present study examined the direct relation between positive peer affiliation and substance use, and whether positive peer affiliation moderated the relation between self-reported sensation-seeking, future…

Background: While a theoretical association between religiosity and substance use is anticipated, there is limited empirical evidence testing this theoretical proposition among Nordic adolescents. It was anticipated that studying these substance-use correlates from a criminological perspective by employing a large sample of students could provide…

Objective: To examine the prevalence and correlates of lifetime cannabis use (i.e., experimental [use 1-5 times] and non-experimental [use [greater than or equal to] 6 times]) in relation to interpersonal trauma (IPT) above and beyond relevant covariates. Participants: A large (n = 9,889) representative sample of college students at an urban…