This course investigates the potential for preventing crime, delinquency, and associated social problems with high costs to society. It uses as illustrative cases recent developments in the prevention of juvenile delinquency, child abuse and neglect, bullying and other forms of victimization, substance abuse and alcohol misuse, teen pregnancy, and school drop-out. Preventive interventions in the domains of family, school, and community are explored. For each of these crime-related social problems, we will (1) identify the impact of each of these problems on the social welfare, (2) explore preventive interventions for these problems, and (3) examine evidence for the effectiveness of prevention strategies. Students will read and report on original research throughout the semester.