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This study uses social learning theory to examine whether differential associations with e-cigarette-using peers is related to personal e-cigarette use among youth, and the extent to which this relationship is explained by personal risk perceptions of e-cigarettes. Moreover, this study tests whether the mediation process is moderated by type of e-cigarette user. This study uses a sample of high school seniors from the 2016 Monitoring the Future Study ( N = 2,100), and a subsample of e-cigarette users ( n = 523). Analyses are carried out using OLS and logistic regression. Findings demonstrate that higher levels of peer e-cigarette use are related to higher odds of personal e-cigarette use, but that risk perceptions of e-cigarettes only explain a modest portion of that relationship (about 10%). Furthermore, the mediation process does not appear to vary by type of e-cigarette user. Future directions and policy implications are discussed.

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Previous research finds adolescent work hours to be associated with increased alcohol use. Most studies, however, fail to account for possible selection effects that lead youth to both work and substance use. Using data from the first two waves of the National Longitudinal Study of Adolescent Health (N = 12,620), a fixed effects regression method is employed to control for stable between-person differences neglected by previous studies. Results show little relationship between work hours and alcohol use when controlling for individual heterogeneity. Results reveal variations, however, by family structure, with work hours being negatively associated with alcohol use among those from single-parent households. Although exhibiting significant main effects, family and peer processes fail to account for differences by family structure.

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