Several risk and protective factors are influential in predicting who uses or abstains from illicit substances during the high school years. The 2014 national cohort data from the Monitoring the Future survey shows the demographics, psychosocial factors, and attitudes regarding substance use that predict abstention by twelfth-graders (versus those…

In this article, we test: (a) the relation between school-based extracurricular participation and indicators of positive and negative development across a range of activity contexts, and (b) a mediation model linking activity participation, prosocial peers, and development. Extensive survey information was collected from a predominately White…