Dennis L. Thombs, PhD, FAAHB, is Professor and Dean of the School of Public Health at the University of North Texas Health Science Center in Fort Worth. The focus of his scholarship is addictive behavior, with special interests in the epistemology of addiction, and in alcohol and drug use during the period of emerging adulthood. In recent years, his research has focused on analyzing drinking practices and their consequences in natural settings. Dr. Thombs is Managing Coeditor of the American Journal of Health Behavior. He is past President and Fellow of the American Academy of Health Behavior.

Cynthia J. Osborn, PhD, LPCC-S, LICDC, is Professor of Counselor Education and Supervision at Kent State University. Her clinical background is in treatment of adults with co-occurring disorders (substance use disorders and mental illness). Her teaching, supervision, and scholarship focus on addictions counseling, particularly evidence-based practices such as motivational interviewing. She is a member of the Motivational Interviewing Network of Trainers and has extensive experience in the clinical supervision of counselors-in-training and professional counselors.