William R. Miller and Stephen Rollnick

Dr. William R. Miller is Emeritus Distinguished Professor of Psychology and Psychiatry at the University of New Mexico. Fundamentally interested in the psychology of change, he has focused in particular on the development, testing, and dissemination of behavioral treatments for addictions. He maintains an active interest in pastoral counseling and the integration of spirituality and psychology. The Institute for Scientific Information lists him as one of the world's most cited scientists.

Stephen Rollnick provides consultancy, mentorship and training on the subjects of motivation, change, teamwork and Motivational Interviewing. He an Honorary Distinguished Professor in the School of Medicine in Cardiff University, Wales, UK with a research record focused on good practice in efforts to promote change and behaviour change among patients, clients and the practitioners who serve them.

Stephen is also a clinical psychologist with many years of experience in service provision and in the training of practitioners. This work, much of it on motivational interviewing (MI), has taken him into diverse cultures and settings. He has now retired to focus on training, writing and consultancy, in the fields of healthcare and sport.