Thanks DeeDee and aeh! We know 10yDD twin B was gifted but with 2e, not sure how much of behaviour is gifted vs. 2e. Wasn't sure if one test was better at ferreting out the differences between the gifted vs. the 2e component and what I read on Hoagies and Davidson sites, knowing an accurate IQ helps determine what support the school should provide. Again, really appreciate your guidance.