Dr. Johnston’s primary research focus is the behavioral management of obesity encompassing the entire lifespan. Specifically, he has developed an efficacious school-based obesity prevention program for children and adolescents. His research also has focused on developing strategies for maintaining a healthy lifestyle in adults to reduce the occurrence of cardiovascular and other chronic diseases. Dr. Johnston is active in publishing peer reviewed articles and chapters and has presented at many national and international scientific conferences. He also is involved in training professionals in the use of behavioral strategies, adherence promotion, motivational interviewing, and improving communication between health care providers and patients. Dr. Johnston obtained his Ph.D. in clinical child psychology from the University of Kansas.