Professor David A. Clark is a world-leading expert in Cognitive Behavior Therapy (CBT), a highly acclaimed Author, Clinical Psychologist and Professor Emeritus with the Department of Psychology at the University of New Brunswick, Canada.

Professor Clark trained with CBT founder Aaron T. Beck and has written more than twelve books about how CBT can help overcome anxiety, depression, Post-Traumatic Stress Disorder (PTSD) and Obsessive-Compulsive Disorder (OCD). In addition, he is regularly invited to deliver keynote addresses, guest lectures and workshops for mental health professionals worldwide.

Professor Clark is a certified trainer in CBT with the Academy of Cognitive and Behavioral Therapies and The Canadian Association of Cognitive and Behavioural Therapies.

Over 30 years, he has published over 150 journal articles and chapters. He also led the development of the University of New Brunswick’s accredited doctoral program in clinical psychology.

Doctor of Philosophy (PhD), PsychologyUniversity of London1984
Master of Philosophy (M Phil)University of London1982
6 Honors and Awards
Academy of Cognitive Therapy2008
Aaron T. Beck Award for Significant & Enduring Contributions to Cognitive Therapy
Grey House USA2004
Canadian Who’s Who
9 Books
Book cover of "The Negative Thoughts Workbook: CBT Skills to Overcome the Repetitive Worry, Shame, and Rumination That Drive Anxiety and Depression"
Book cover of "Cognitive-Behavioral Therapy for OCD and Its Subtypes"
Book cover of "The Anxious Thoughts Workbook: Skills to Overcome the Unwanted Intrusive Thoughts that Drive Anxiety, Obsessions, and Depression"
Book cover of "The Mood Repair Toolkit – Proven Strategies to Prevent the Blues from Turning into Depression"
Book cover of "Assessment in Cognitive Therapy"
Book cover of "The Anxiety and Worry Workbook: The Cognitive Behavioural Solution"
Book cover of "Cognitive Therapy of Anxiety Disorders: Science and Practice"
Book cover of "Overcoming Obsessive Thoughts: How to Gain Control of Your OCD"
Book cover of "Clark-Beck Obsessive-Compulsive Inventory"