It is sort of interesting how it came about. We live in an area that has several of the best universities in the country and as a result there seems to be a much higher than normal population of HG and PG children. DD is wickedly creative, very very much an out of the box thinker and it is very obvious right away. We had the initial eval done only because her teacher suggested that she skip a grade and I wanted to make sure that she was not just a high achiever but was actually bright enough that the skip would not cause undue stress. Fast forward and her GAI was in the high 140's and FSIQ in the 130's while that is in the higher range she does not have the highest cognitive ability in her school or to be honest even in her class. You would not think based on her scores she would really stand out in her class but she does. So, the person that acts as the school psychologist at her school (small private school) is actually a Ph.D. level Neuropsychologist, She administered the Delis-Kaplan Executive Function System. DD was in the 99.9th percentile in all areas. They said this was very unusual and actually occurs less than really high IQ's thus explaining the reason she stands out in the group and the creativity. The psych did mention that these tests are rarely used by anyone but neuropsychologist, so maybe that is why they are not common? Not sure but in DD's case in was relevant info. She did say people with ADHD and Asperger's tend to have very poor executive functioning skills.