Paul M. Lehrer, PhD, is a clinical psychologist and Professor of Psychiatry at the University of Medicine and Dentistry of New Jersey-Robert Wood Johnson Medical School. He has published more than 100 articles and chapters, mostly on biofeedback, psychophysiology, and cognitive-behavioral therapy. Dr. Lehrer is past president of the Association for Applied Psychophysiology and Biofeedback and has received their Distinguished Scientist Award. He also recently served as president of the International Society for the Advancement of Respiratory Psychophysiology and of the International Stress Management Association-USA Branch (ISMA-USA). Robert L. Woolfolk, PhD, is Professor of Psychology and Philosophy at Rutgers, The State University of New Jersey, and Visiting Professor of Psychology at Princeton University. He has published widely on psychotherapy, psychopathology, and the philosophical foundations of psychology. A practicing clinician for more than 30 years, Dr. Woolfolk has sought in both his practice and research to integrate the scientific and humanistic traditions of psychotherapy. He is coauthor of Stress, Sanity, and Survival and Treating Somatization, and author of The Cure of Souls: Science, Values, and Psychotherapy. Wesley E. Sime, PhD, is a health psychologist and stress physiologist and Professor in the Department of Nutrition and Health Science at the University of Nebraska-Lincoln. He is past chair of both the Biofeedback Certification Institute of America and ISMA-USA. Dr. Sime was an early contemporary of Hans Selye and Edmund Jacobson and continues to facilitate stress management developments with Paul Rosch, Charles Spielberger, and James Quick. He is also a consultant in medical and sports performance settings.