Johnny L. Matson, is Professor and Distinguished Research Master and Director of Clinical Psychology in the Department of Psychology at Louisiana State University in Baton Rouge, LA. He is the author of 29 books and more than 350 scientific papers and book chapters. His area of clinical and research interests are developmental disabilities, autism, and severe child psychopathology.

Frank Andrasik holds the positions of Professor of Psychology at the University of West Florida and Senior Research Scientist at the Florida Institute for Human and Machine Cognition. He has published approximately 200 articles and chapters and has delivered more than 450 talks on the topics of pain, stress, biofeedback, developmental disability, psychiatry, and organizational behavior management; he has also produced several texts for professionals. His most recent published texts are Biofeedback: A Practitioner's Guide, 3^rd edition (Guilford, $80), co-edited with Mark S. Schwartz in 2003, and Comprehensive Handbook of Personality and Psychopathology, Volume Two: Adult Psychopathology (Wiley, $200), an edited volume that has just been released (with a publication date of 2006). He belongs to a number of professional societies, holding the status of Fellow in the American Psychological Association (Division of Health Psychology and Society of Clinical Psychology), American Psychological Society, and Society of Behavioral Medicine, and serving as President of the Association for Applied Psychophysiology and Biofeedback in 1993-1994.

Michael L. Matson is a student at Louisiana State University. He is co-author of 2 books and 7 scientific papers. His research interests are in the area of developmental disabilities.