Used around the world by novice clinicians as well as experienced therapists new to cognitive-behavioral therapy (CBT), this bestselling book has been widely adopted as a text in clinical training programs.

Deborah Roth Ledley, PhD, is a psychologist in private practice at the Children's Center for OCD and Anxiety in Plymouth Meeting, Pennsylvania. From 2001 to 2005, she was Assistant Professor of Psychology in Psychiatry at the University of Pennsylvania School of Medicine, where she was also a faculty member at the Center for the Treatment and Study of Anxiety. Dr. Ledley has published articles, book chapters, and books on topics including the nature and treatment of social anxiety disorder, obsessive-compulsive disorder, and other anxiety disorders. Brian P. Marx, PhD, is a staff psychologist at the National Center for PTSD, VA Boston Healthcare System, and Associate Professor of Psychiatry at Boston University School of Medicine. Dr. Marx has published numerous articles and book chapters on behavior therapy and assessment. His research interests include the association between posttraumatic stress disorder and functional impairment, identifying risk factors for posttraumatic difficulties, and developing brief, efficacious treatments for posttraumatic stress disorder. Richard G. Heimberg, PhD, is David Kipnis Distinguished Faculty Fellow and Professor of Psychology at Temple University, where he also serves as Director of the Adult Anxiety Clinic. He is past president of the Association for Behavioral and Cognitive Therapies as well as former editor of the Association's journal Behavior Therapy. Dr. Heimberg is well known for his efforts to develop and evaluate cognitive-behavioral treatments for social anxiety and generalized anxiety disorder and has published several books and more than 300 articles and chapters on these and related topics.