Widely regarded as the standard clinical reference, this volume provides the best current knowledge about attention-deficit/hyperactivity disorder (ADHD) in children, adolescents, and adults. The field's leading authorities address all aspects of assessment, diagnosis, and treatment, including psychological therapies and pharmacotherapy. Core components of ADHD are elucidated. The volume explores the impact of the disorder across a wide range of functional domains--behavior, learning, psychological adjustment, school and vocational outcomes, and health. All chapters conclude with user-friendly Key Clinical Points. New to This Edition* Reflects significant advances in research and clinical practice.* Expanded with many new authors and new topics.* Chapters on cutting-edge interventions: social skills training, dietary management, executive function training, driving risk interventions, complementary/alternative medicine, and therapies for adults.* Chapters on the nature of the disorder: neuropsychological aspects, emotional dysregulation, peer relationships, child-and adult-specific domains of impairment, sluggish cognitive tempo, and more.