Loobie - Thanks for replying, your comments were very interesting and helpful. I think I may have made my comments in the thread about the educational psychologist confusing, as my nephew was a poor sleeper as a baby, but as a child is good. From what my sister and myself have found out about Aspergers, it seems that there are quite a wide variety of symptoms (from want of a better word). My ds sounds quite similar to your ds in that he also gets totally absorbed and obsessed by things, in his case it has been trains, space and flags, and he knows these topics so well I feel that I should put him on 'Mastermind'. He also talks over adults and answers back in such a clever way that if it were'nt so rude, you would be impressed at his adult-like reasoning. Intellectually, he is extremely bright, like your ds, but emmotionally, he is immature. As your ds, he is difficult to punish, bribery, threats, praise, you name it, doesn't work, he can be so extremely strong-willed and unreasonable. However, one-to-one, he is great. Apparently, at school he is good, but the last time I spoke to his teacher was at parents evening last half-term, and since then his behaviour at home has got a lot harder to cope with. Am considering asking his teacher how he is doing, but don't want to make it look as though he is a problem, if he is ok at school. Incidently, I have had problems with him in the past at playschool (posted all about it on another thread, but can't remember which one!) with aggression and non-cooperation, but it seems as though he has grown out of this, at school anyway, home is a different kettle of fish!
My nephew on the otherhand, has more problems with aggression, that is physically fighting with other children at school, not always his fault, but he always manages to get involved. He has always found it hard to make friends, my sister says he is very awkward in social situations, can be rude to grown-ups, and can be difficult to punish also. However, he is very, very clever, but doesn't get fixated by things in the way that my ds does.
By the way, did your ds have a difficult birth? My eldest ds did, and so did my nephew, wonder if there may be some sort of link there. What are your views now I've elaborated a little more? Thanks in advance!