About the Author

James O. Prochaska, PhD, is professor of psychology and director of the Cancer Prevention Research Consortium at the University of Rhode Island and a clinical psychologist in part-time private practice. He has been the principal investigator on grants from the National Institutes of Health totaling over $75 million and has been recognized by the American Psychological Society as one of the five most-cited authors in psychology. His 30 book chapters and over 200 scholarly articles focus on self-change, health promotion, and psychotherapy from a transtheoretical perspective, the subject of his popular book, CHANGING FOR GOOD (with John Norcross and Carlo DiClemente). John C. Norcross, PhD, is professor and former chair of psychology as well as distinguished university fellow at the University of Scranton, and a clinical psychologist in part-time independent practice. Author of more than 250 scholarly articles, Dr. Norcross has written or edited 15 books, the most recent being EVIDENCE-BASED PRACTICES IN MENTAL HEALTH and PSYCHOTHERAPY RELATIONSHIPS THAT WORK. He is editor-in-chief of the Journal of Clinical Psychology: In Session. Among his awards are APA's Distinguished Contributions to Education and Training Award, Pennsylvania Professor of the Year from the Carnegie Foundation, and election to the National Academies of Practice.