Welcome to the official website of Russell A. Barkley, Ph.D., an internationally recognized authority on
attention deficit hyperactivity disorder (ADHD/ADD) in children & adults who has dedicated his career
to widely disseminating science-based information about ADHD. Dr. Barkley was recently named by Research.com as the 37th most influential psychological researcher in the US and the 65th most influential in the world in terms of the impact of his research on the field of psychology, as verified by the number of research articles citing his work. Dr. Barkley retired as a Professor of Psychiatry and Neurology from the University of Massachusetts Medical Center (1985-2002) and later worked as a Professor of Psychiatry and Health Sciences at the Medical University of South Carolina (2003-2016). He taught as a Clinical Professor of Psychiatry at Virginia Commonwealth University School of Medicine (2016-2021). He is now fully retired.