This volume reviews a range of empirically supported approaches to prevention and treatment of adolescent substance use problems. The focus is on motivationally based brief interventions that can be delivered in a variety of contexts, that address key developmental considerations, and that draw on cutting-edge knowledge on addictive behavior change. From expert contributors, coverage encompasses alcohol skills training; integrative behavioral and family therapy; motivational interviewing; interventions for dually diagnosed youth; Internet-based education, prevention, and treatment; and applications to HIV prevention. The volume is extensively referenced and includes numerous clinical illustrations and vignettes.