This book outlines a scientific approach to understanding and treating children and adolescents who display a severe pattern of aggressive antisocial behaviour. Unlike other works which tend to focus exclusively on research data or practical guidelines for treatment approaches, this reference integrates both of these aspects, providing clear guidelines for intervention based on the most current research. Outstanding features include 23 tables and figures, and two chapters detailing a comprehensive approach to treatment tailored to the needs of the individual child or adolescent.