Julia Breur, a licensed clinical psychotherapist in Boca Raton, Florida, says it's important to clarify and even correct many false beliefs surrounding attention deficit hyperactivity disorder. "There are numerous myths and misconceptions about ADHD that are considered to be facts by those who do not appear to understand what ADHD exactly is," she says. If you're an adult who does not have ADHD, here are some things to keep in mind about other adults who do.