I wouldn't be so quick to attribute his lack of focus to being age appropriate...the tests are designed for kids (including boys) of his age. Is this a common theme for him? I would follow up if you have doubts. I can. Be hard being the younger sib of an identified gifted sib especially if both are boys and particularly if there is a 2 e situation so if your gut is worried then act sooner rather than later.
That performance IV is well no question in the gifted range and highly gifted as well. Depending on your school and your childs personality DS5 might need a lot of advocacy. Feel free to post about DS5 issues on the email lists and tap
