This study assessed the moderating effects of school facilitating conditions (school opportunities for prosocial involvement, school commitment, academic grades, and truancy) on adolescent marijuana use within the context of the Theory of Planned Behavior (TPB). Utilizing a large statewide surveillance study of adolescent risk and protective…

Antisocial peer behavior and low parental knowledge of adolescents' activities are key interpersonal risk factors for adolescent substance use. However, how the magnitude of associations between these risk factors and substance use may vary across adolescence remains less well understood. The present study examined the age-varying associations of…

The identification of developmentally specific windows at which key predictors of adolescent substance use are most influential is a crucial task for informing the design of appropriately targeted substance use prevention and intervention programs. The current study examined effects of conduct problems and depressive symptomatology on changes in…

Parental knowledge is defined as parental awareness and information about a child's activities, whereabouts, and associations that is obtained through parental monitoring, parental solicitation, or self-disclosure. Increased parental knowledge is generally associated with lower adolescent substance use; however, the influence of various contextual…

For the four leading causes of death in the United States (heart disease, cancer, stroke and chronic respiratory disease), tobacco use is a common risk factor. Tobacco use is responsible for almost 450,000 deaths per year and impacts the health of every member of our society. Tobacco is a gateway drug for substance abuse. That role is critical to…

This paper examines school policies relating to alcohol and illicit drug use, and their associations with the prevalence of alcohol and marijuana use among students. Both "punitive" and "supportive" policies are examined. Other studies examining punitive disciplinary measures--such as close monitoring of student behavior, having various security…