Philip Weinstein, PhD, is professor in the Department of Dental Public Health Sciences, Pediatric Dentistry, and Psychology at the University of Washington, Seattle. He has published more than 200 papers and four books, includingEarly Childhood Caries: A Team Approach to Prevention and Treatment.He has also self-published a book for dental health care professionals on motivational interviewing techniques titled Motivate Your Dental Patients, A Workbook. He can be reached via email at philw@u.washington.edu.