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David A Clark

David A. Clark, PhD, is a clinical psychologist, and professor emeritus at the University of New Brunswick. He is author or coauthor of several books on depression, anxiety, and obsessive-compulsive disorder (OCD), including The Anxiety and Worry Workbook with Aaron T. Beck (founder of cognitive therapy), The Anxious Thoughts Workbook, The Negative Thoughts Workbook, and Cognitive-Behavioral Therapy for OCD and Its Subtypes. Clark is a founding fellow and trainer consultant with the Academy of...See more