Matthew McKay, PhD
Matthew McKay is a clinical psychologist and a professor at the Wright Institute in Berkeley, California. He cofounded Haight Ashbury Psychological Services in San Francisco in 1979 and served as its clinical director for twenty-five years. Currently he serves as the director of the Berkeley Cognitive Behavior Therapy Clinic. Books he has coauthored on professional and self-help psychology have sold more than 3 million copies.