[aspenhall]

Sounds like he may not be full blown RAD because he "aims to please"...and may simply be inquisitive about the way things work....as far as the destructiveness...also, he could just be fighting for his place in this world as far as where he fits in...and the fighting is an insecurity issue.

My DH who is sickeningly NORMAL and well-adjusted would take apart the family lawn mower in a single afternoon at that age (8-9-10) and everything else ....that had any motor parts or wheels (to be used for "inventions" etc...)