Russell A. Barkley, PhD, is Clinical Professor of Psychiatry at the Medical University of South Carolina and Research Professor of Psychiatry at the State University of New York Upstate Medical University at Syracuse. Dr. Barkley has published 10 books, more than 200 scientific articles and book chapters, and 7 videos on Attention-Deficit/Hyperactivity Disorder (ADHD) and related disorders, including childhood defiance. He is also the editor of the newsletter "The ADHD Report," A frequent conference presenter and speaker who is widely cited in the national media, he is past president of the Se...