David A. Clark

David A. Clark, PhD, is a clinical psychologist, and professor emeritus at the University of New Brunswick in Canada. He is author of several books on depression and anxiety, including Overcoming Obsessive Thoughts, The Anxiety and Worry Workbook, The Anxious Thoughts Workbook, The Negative Thoughts Workbook, and his most recent publication, This Is What Anxiety Looks Like. He has coauthored several books with the pioneer of cognitive behavioral therapy (CBT), Aaron T. Beck, including Cognitive Therapy for AnxietyDisorders.