Ah, I think my seven year old is living at your house. All your houses!
Apparently, the correlation between high iq and low impulse control is well established. I'll try to find the link of the Eides' neuroscience blog. No brakes In cognition equals no brakes in emotion...
I second the advice to keep blood sugar levels under control. Reactive hypoglycemia is so common for the HG+ population, too. DS7 is unable to regulate his eating himself, so we have to do it for him, making him eat enough at mealtimes to avoid crashes. They do not realize they are hungry, so you have to monitor this for them (DH still has to do it for me sometimes, he comes by it honestly...). Eating primal (high fat moderate protein low carb) has helped tremendously, and allowed us to go off the constant need for snacks pattern. Sugary and starchy breakfasts and snacks are the devil!
Edited to add links:
http://eideneurolearningblog.blogspot.de/2010/01/cognition-without-control-adhd-gifted.htmlhttp://eideneurolearningblog.blogspot.de/2006/03/biology-of-late-bloomers-gifted-but.html
