Thanks. I'm considering the ADD testing too, but like you am worried about misdiagnosis etc. Chatting with him this morning about school work, he was talking about daydreaming. When I suggested he speed up with the work (which is never difficult for him) so that he could daydream when it was done, he complained that he would just be given more work to do, and the only opportunity to daydream at school was at Recess. If I wasn't so bothered I'd find it funny! I like the idea of a watch too, but he's pretty obsessed with time, money ... anything Mathematical, and I'm concerned that it may cause more problems as he may focus on the watch more than the work. Not sure.
Thanks for the help .... we'll keep digging.