In this article we address several issues regarding problem or antisocial behavior inadolescents. First, we discuss conceptualizations of adolescent problem behavior to answer thequestion “What do we think we know so far?” Then, we briefly characterizecurrent interventions designed to reduce these behaviors, and their relative success in doing so.Next, we examine earlier attempts to prevent and ameliorate problem behavior (including juveniledelinquency), situating them in the historical context of America from the turn of the century toWorld War II. Here, we attempt to answer the questions “How did we get to where weare?” and “How can we learn from the past?” Following this, we try toanswer the question “Where do we go from here?” and articulate some researchand policy implications relevant to developmental psychopathology that arise from theseconsiderations. We argue that problem behavior is viewed most productively in its double aspect,which John Hughlings Jackson called a “double symptom,” with the positive aspectof the symptom reflecting adolescents' attempts to satisfy their developmental needs.