I don't know. What's weird is that people with ADHD supposedly have normal intelligence, yet things like working memory and processing speed are measured as part of IQ tests. If ADHD people tend to be impaired with those things, but they are part of intelligence, then by logic you have to say that ADHD people aren't as intelligent overall. So if my DD has processing speed issues does that or does that not mean her overall intelligence is impaired? If there are discrepanices why calculate a GAI in order to get a true idea of a person's ability? Why leave those scores in for some people but not others? Why not just leave them OFF for everyone?