Matthew McKay, Ph.D., is a clinical psychologist, professor of psychology at the Wright Institute, cofounder of Haight Ashbury Psychological Services, founder of the Berkeley CBT Clinic, and cofounder of the Bay Area Trauma Recovery Clinic, which serves low-income clients. He has authored and coauthored more than 40 books, including The Relaxation and Stress Reduction Workbook and Seeking Jordan. The publisher of New Harbinger Publications, he lives in Berkeley, California.