Aaron T. Beck, MD, is University Professor Emeritus of Psychiatry at the University of Pennsylvania and President of the Beck Institute for Cognitive Therapy. Dr. Beck developed cognitive therapy in the early 1960s as a psychiatrist at the University of Pennsylvania. He has published over 500 articles and numerous books and has lectured throughout the world. Dr. Beck is the recipient of many honors from professional and scientific organizations, including "America's Nobel," the Lasker Clinical Medical Research Award.
Matthew McKay, PhD, is a professor at the Wright Institute in Berkeley, CA. He has authored and coauthored numerous books, including The Relaxation and Stress Reduction Workbook, Self-Esteem, Thoughts and Feelings, When Anger Hurts, and ACT on Life Not on Anger. McKay received his PhD in clinical psychology from the California School of Professional Psychology, and specializes in the cognitive behavioral treatment of anxiety and depression. He lives and works in the greater San Francisco Bay Area.