Building on the success of the first edition and addressing the advances in the field since its publication, Seija Sandberg has brought together a distinguished, international team to review the area of attention-deficit and hyperactivity disorders (ADHD) in children and young adults. This new edition is thoroughly revised and updated. Some chapters, such as those dealing with the genetic background and the adult form of the disorder, are completely new, and some of the areas dealt with in the first edition are being covered by new authors in the second. The writers are among the world's leading experts, both researchers and clinicians, in the area. This will be essential reading for all professionals involved in the management and care of people with ADHD.