Updated and expanded, this remarkably clear and effective manual now includes, in a single 8" x 11" volume, an introduction and thorough clinical guide to Barkley's 10-session parent training program, a fully rewritten and more extensive assessment section, and helpful parent and teacher handouts. This revised volume incorporates DSM-IV diagnostic criteria and offers even more guidelines for assessing children with defiant behavior, including a detailed parent interview that goes through each of the relevant childhood disorders. In addition, it provides two new scales for assessing parents, who may also have ADHD or oppositional defiant disorder. Practitioners who purchase this book now have permission to reproduce the parent and teacher handouts for clinical use. For the first edition, these handouts were not reproducible and were sold separately. Readers can now photocopy the forms they need as often as they need. This book will be of value to mental health practitioners working with children, in clinical and educational settings.