The Anxiety and Worry Workbook, First Edition

David A. Clark, PhD, is Professor of Psychology at the University of New Brunswick, Canada, where he also has had a private practice for 25 years. Dr. Clark is a widely recognized authority on cognitive behavior therapy for anxiety and depression and is the author of numerous books, including The Mood Repair Toolkit. He is a Fellow of the Canadian Psychological Association and Founding Fellow of the Academy of Cognitive and Behavioral Therapies.

Aaron T. Beck, MD, until his death in 2021, was University Professor Emeritus of Psychiatry at the University of Pennsylvania and President Emeritus of the Beck Institute for Cognitive Behavior Therapy. Internationally recognized as the founder of cognitive therapy, Dr. Beck has been credited with shaping the face of American psychiatry and was cited by American Psychologistas "one of the five most influential psychotherapists of all time." Dr. Beck was the recipient of awards including the Albert Lasker Clinical Medical Research Award, the Lifetime Achievement Award from the American Psychological Association, the Distinguished Service Award from the American Psychiatric Association, the James McKeen Cattell Fellow Award in Applied Psychology from the Association for Psychological Science, and the Sarnat International Prize in Mental Health and Gustav O. Lienhard Award from the Institute of Medicine. He authored or edited numerous books for professionals and the general publicTogether, Drs. Clark and Beck are the authors of a related professional book, Cognitive Therapy of Anxiety Disorders, also published by Guilford.