This comprehensive volume reviews and synthesizes a vast body of knowledge on maladaptive aggression and antisocial behavior in youth. Written from a clinical-developmental perspective, and integrating theory and research from diverse fields, the book examines the origins, development, outcomes, and treatment of this serious problem in contemporary society. Major topics addressed include the types and prevalence of aggressive and antisocial behavior; the interplay among neuropsychiatric, psychosocial, and neurobiological processes in etiology; known risk and protective factors; gender variables; and why and how some children grow out of conduct disturbances. Chapters also discuss current approaches to clinical assessment and diagnosis and review the evidence for widely used psychosocial and pharmacological interventions.