Seminar, three hours. Adolescent health and interventions, with focus on sex, alcohol, and drug use. Focus on adolescent identity development, adolescent sexuality, discussion of gay, lesbian, bisexual, and transgender issues, components of sexual risk-taking behavior, and alcohol and drug use (e.g., peer influence, changes in brain activity) and interventions that have been developed to address these behaviors. Building of skills to work with adolescent populations and in community-based settings. Letter grading.