In America, the go-to guy on ADHD is Dr. Russell Barkley, whose impressive credentials include psychologist, clinical professor of psychiatry at the Medical University of South Carolina, and author of several books. In an online course on ADHD, Dr. Barkley compares my views on ADHD those of the Church of Scientology. Rather than address the salient issues, he has consistently preferred ridicule and simplistic representations of my position on the subject.