title: A longitudinal study of cannabis use initiation among high school students: Effects of social anxiety, expectancies, peers and alcohol.
abstract: This study identified protective and risk factors of cannabis use initiation, including expectancies and social anxiety. A questionnaire was completed twice by 877 teenagers. Logistic regressions, mediation and moderation analyses were performed. Significant risk factors were alcohol use, peer users, perceptual enhancement, and craving expectancies. Protective factors were negative behavior expectancies and social anxiety. Social anxiety protected from initiation through the mediating role of perceptual enhancement and craving expectancies, whatever the role of peer users and alcohol use. Findings are discussed in terms of risk and protection, in an overall approach including internalizing factors. Results support the identification of an internalizing profile of adolescents for prevention or treatment and the importance of social anxiety and expectancies in intervention.
authors: Département Psychologie, Cognition et Comportement, Université de Liège, Belgium; Fonds National de la Recherche Scientifique, Belgium. Electronic address: emilie.schmits@ulg.ac.be.
authors: Emilie
authors: E
authors: Schmits
authors: Département de Criminologie, Université de Liège, Belgium. Electronic address: cecile.mathys@ulg.ac.be.
authors: Cécile
authors: C
authors: Mathys
authors: Département Psychologie, Cognition et Comportement, Université de Liège, Belgium. Electronic address: equertemont@ulg.ac.be.
authors: Etienne
authors: E
authors: Quertemont
mesh_terms: D000293:Adolescent; D000294:Adolescent Behavior / Q000523:psychology; D000428:Alcohol Drinking / Q000523:psychology; D001007:Anxiety / Q000523:psychology*; D005260:Female; D006801:Humans; D007389:Internal-External Control; D007398:Interpersonal Relations; D008137:Longitudinal Studies; D008297:Male; D008385:Marijuana Smoking / Q000517:prevention & control / Q000523:psychology*; D010379:Peer Group; D012054:Reinforcement, Psychology; D012307:Risk Factors; D012919:Social Behavior; D013334:Students / Q000523:psychology*; D011795:Surveys and Questionnaires
keywords: Cannabis initiation; Expectancies; Longitudinal; Predictors; Social anxiety