My ex got the trampoline in our divorce and I miss it. I have 2 and they're so incredibly exhausting, though each on their own may be slightly less stubborn. I look at people who's children stand quietly in lines at the grocery store and I think, How do you do that? I have no idea. Appleblossom, it sounds like you might get some comfort out of testing, but only if he'd cooperate with the tests, of course. My 5yo DS did not, and it ended up being mostly a waste of time because of that. My daughter wasn't particularly cooperative at around age 5 either but we did get reliable solid scores at age 8. It's a long time to wonder, though.