Among the many myths and misunderstandings of Attention-Deficit/Hyperactivity Disorder is that exceptionally smart people can’t have ADHD (or, conversely, that ADHD comes pre-packaged with gifts of creativity and high intelligence). However, as Dr. Thomas Brown explains in “The Mysteries of ADD and High IQ,” ADHD “has nothing to do with how smart a person is. Some individuals with ADD are super-smart on IQ tests, many score in the average range, and some are much lower.”