My son is almost 2 1/2, since last month his temper has changed a lots. I read some book before, it said "children at the age of 2 1/2 is very difficult and self-centred. they've their rules. e.g. they must wear T-shirt before trousers, if u put trousers on him 1st, he'll be very angry". My son doesn't speak well; however, he understands what we said and response quickly. I think your problem is just temporary, it'll change when he is near 3. at that stage, he can speak better than now and his temper is more gentle. Playgroups do help; however, i would suggest the one adopting international school approach because the teachers will see the problem in depth and more considerate. They know it's just one of the stage of the kid. (i've tried some local playgroup, the teacher felt my son is a trouble ## just because he's very active##) Don't be too worry. Strongly suggest: go to some reputable playgroup will help!