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Abstract
Alcohol and tobacco use are strongly associated, particularly in younger populations, and concurrent use may encourage progression toward dependence on both substances. Impulsivity has been linked to the use of alcohol and tobacco individually, but has not been studied in terms of its association with use of both. This study tested the hypothesis that the effects of impulsivity (sensation seeking and negative urgency) on smoking initiation in a sample of college students (n = 400) would be mediated by alcohol consumption. We also predicted that sensation seeking and negative urgency would predict alcohol and cigarette use and overlap among initiators.
Sensation seeking and negative urgency both predicted smoking initiation, but only the former effect was mediated by alcohol use. Among initiators, sensation seeking was associated with more frequent alcohol use as well as more frequent overlap between alcohol and tobacco use but not with smoking frequency. Higher negative urgency was associated with more frequent smoking, but not with alcohol use or alcohol/tobacco overlap. Findings are consistent with previous research in college samples and suggest the existence of multiple pathways to alcohol and tobacco use and co-use in college students.
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Acknowledgments
This research was supported by grant 17KT-0027 (ND) from the California Tobacco-Related Disease Research Program. This agency played no role in this research other than to provide funding.