That's one thing I dread about having kids!

But back to AS traits - yes of course as you said tastes and suchlike (as in waht they watch on TV) are largely not something they "get" from parents, but surely there are some aspects of behaviour, and some habits, that you pick up from parents (even if they are not biological parents for example)?

Yes in this particular case (Singer) I must admit it is unlikely that it is down to nurture, but there are also many things that kids do pick up from their parents, or learn from them.

For example every family I have ever had dinner with has their own little idiosynchratic ways as far as dinner table rules are concerned, and this seems to carry through at least to some degree (for example people whose families have lax rules generally don't fuss about with eating at the table when they have their own household etc.) so I could well see that an NT who grows up learning more Aspie-type ways of doing things (or structuring things) could pick up some of these ways.

Of course spending a lot of time with other families (sleepovers etc.) can help to broaden this but I suspect some people with AS who don't like being around lots of people may not go to great lengths to deal with having children over or organising for their kids to spend time at other parent's homes, so perhaps this also increases this effect?

(Of course if it is too extreme then it can go the other way!)