Book excerpt: "Tourette syndrome is a common, hereditary disorder that provides insight into how we and our children behave and misbehave and why some of us can't read, learn, or pay attention; compulsively do things including eating and abusing drugs or alcohol, spouses or children and are angry, short-tempered, anxious afraid, depressed or feel different and all alone. This book is written for both the lay reader and the health or education professional as a guide to the exciting story of how a common gene may control a wide range of human behaviors."--Page [i]