Understanding what works for reducing adolescent violence in the United States today requires more than simply reviewing evaluations of programs to identify those showing statistically significant changes in behavior and then selecting the most valuable technique. The search for solutions hinges on a clearer picture of the scope and nature of teenage violence in this society.It is a complex social problem that takes different forms and often co-occurs with other problem behaviors (Elliott, Huizinga, & Menard, 1989).