Russell A. Barkley, PhD, is a clinical professor of psychiatry at the Virginia Treatment Center for Children and Virginia Commonwealth University Medical Center. He holds a diplomate in clinical psychology, clinical child and adolescent psychology, and clinical neuropsychology. His publications include 22 books, rating scales, and clinical manuals; and more than 260 scientific articles and book chapters on the nature, assessment, and treatment of ADHD. Dr. Barkley has featured in seven award-winning DVDs, has presented more than 800 invited addresses internationally, and appeared on national television programs and radio programs, such as 60 Minutes, The Today Show, Good Morning America, CBS Sunday Morning, and CNN. He has received numerous awards for his contributions to ADHD research and clinical practice.