"Barlow has shown us once again why his status as the most influential contemporary clinical psychologist is so well-deserved. The progress in so many areas of clinical psychology is stunning, and no other source brings these areas together in such a coherent, engaging, or thorough fashion. The book serves as a definitive statement of what clinical psychology has been, is right now, and can be. This is a perfect guide to the future generation of psychologistsand a reassuring statement to all of us that our work has made a difference." --Alan E. Kazdin, Ph.D., ABPP, John M. Musser Professor of Psychology and Child Psychiatry, Yale University"David Barlow has assembled a comprehensive and masterful group of contributions. This book is eminently readable, highly informative, and will be a valuable resource to all involved in the study, application, advancement, and dissemination of clinical psychology."--W. Edward Craighead, Ph.D., J. Rex Fuqua Chair in Child Psychiatry, Emory University