Brian L. Burke, PhD, is Professor of Psychology at Fort Lewis College (FLC) in Durango, Colorado, and Assistant Training Director for the FLC Counseling Center. His publications include meta-analyses evaluating motivational interviewing, with coauthor Brad Lundahl, as well as two psychology textbooks. Dr. Burke served as president of the Rocky Mountain Psychological Association and received the Association's Mentor Award. He is also a recipient of multiple teaching and scholarship awards from FLC and of the Robert S. Daniel Teaching Excellence Award from the Society for the Teaching of Psychology. Dr. Burke is a member of the Motivational Interviewing Network of Trainers.

Brad Lundahl, PhD, MSW, is Associate Professor in the College of Social Work at the University of Utah. Dr. Lundahl is most interested in researching factors that motivate people to change individual behaviors. He enjoys teaching about counseling approaches, including motivational interviewing (MI), and is a member of the Motivational Interviewing Network of Trainers. Dr. Lundahl's publications include over 40 journal articles. He is the owner of Compass Counseling in Salt Lake City and cofounder of eSYM, an online MI training organization.

Hal Arkowitz, PhD, until his death in 2019, was Emeritus Associate Professor of Psychology at the University of Arizona. His life's work was dedicated to understanding how people change and why they don't. Dr. Arkowitz published widely in the areas of psychotherapy and motivational interviewing and was the recipient of the Distinguished Contributions to the Science of Psychology Award and the Distinguished Mentor Award from the Arizona Psychological Association. A scientist-practitioner for his entire career, he was deeply interested in how science can inform practice and how practice can inform science.