Alcohol, tobacco, and marijuana expectancies as predictors of substance use initiation in adolescence: A longitudinal examination.

ABSTRACT: Outcome expectancies have been found to be predictive of substance use. While development of expectancies may be dynamic during adolescence, it is unknown whether the rate of change (slope) in substance use expectancies is a risk factor for use onset across multiple substance use domains. The present study tested the hypothesis that the slope of positive and negative alcohol, tobacco, and marijuana use expectancies during mid-adolescence (9th-10th grade) would predict use onset of each respective substance during late adolescence (11th-12th grade). Data from 3,396 ethnically diverse high school students were collected across eight waves of assessment and analyzed within a latent growth modeling framework. Results revealed that the slopes of positive substance use expectancies among never-u

SUBMITTER: Montes KS 

PROVIDER: S-EPMC6367043 | biostudies-literature | 2019 Feb

REPOSITORIES: biostudies-literature