Albert Ellis, Ph.D., was the intellectual founder of all clinical approaches that now fall under the rubric of cognitive behavior therapy, and he is generally regarded as one of the most influential psychologists of the 20th century. His Rational Emotive Behavior Therapy is now practiced and taught throughout the world, along with the numerous similar therapies that it spawned. Dr. Ellis wrote 70 books and more than 600 journal articles and monographs. At the Albert Ellis Institute, which he founded and managed for more than half a century, he personally trained or supervised thousands of clinicians. As a practicing psychologist, he personally helped more than 10,000 people lead less painful and more productive lives. Dr. Ellis received dozens of awards from organizations like the American Psychological Association and American Counseling Association for his tireless work in advancing psychology, counseling, and social work. When he received his Ph.D. from Columbia University in 1947, he had already established himself as the most renowned sex therapist in the first half of the 20th century, and he then went on to revolutionize the field of clinical psychology. Dr. Ellis died July 24, 2007, while this book was in the final stages of preparation. Mike Abrams, Ph.D., has been a practicing clinician in New Jersey for more than 20 years. He is also on the graduate counseling faculty of William Paterson University and is a fellow and supervisor of the Albert Ellis Institute. Dr. Abrams studied and worked closely with Dr. Ellis, with whom he published several books, chapters, and articles. Dr. Abrams has received commendations from the New Jersey governor, the Hudson County executive, and the Jersey City mayor for his volunteer efforts. His commitment to pro-bono work includes his being among the first psychologists to counsel people with AIDS at the Gay Men's Health Crisis in the early 1980s. Dr. Abrams has degrees from Queens College, Brooklyn College, the Graduate Center of City University of New York, and New York University. He also did postdoctoral study at Columbia University and the Albert Ellis Institute. Prior to becoming a psychologist, he earned an MBA and worked in organizations such as the New York Stock Exchange, Merrill Lynch, and Citicorp. Lidia Dengelegi Abrams, Ph.D., is the executive director of Resolve Community Counseling Center, Inc., a private, nonprofit mental health agency. She also maintains a private clinical psychology practice and consults for the New Jersey Division of Youth and Family Services, the New Jersey Office of Parental Representation, and the New Jersey Division of Vocational Rehabilitation. Dr. Abrams has co-authored one other book with Dr. Ellis and has published research in the areas of AIDS education and prevention, eating disorders, and comparative psychotherapy efficacy. For several years, she conducted research on health care utilization at Rutgers University's Institute for Health, Health Care Policy, and Aging Research. She has a master's degree in psychology from New York University and a Ph.D. in psychology from Temple University. She is a fellow and supervisor of the Albert Ellis Institute. Dr. Abrams has taught at New Jersey City University.