My son is 8, apparently very bright, sporty, musical, loving - what more could I ask! But his class teacher says he hits and hurts his "friends" about 3 or 4 times a week. It's without malice and it's usually because he is annoyed or frustrated, but parents are complaining and he is losing friends. At the moment his is popular but the odd friend is beginning to drift away for their own safety. He never hits girls, and I suspect it's connected with the fact that he has a younger brother with whom he fights a great deal. Any advice?