About two years after Ricki was born, I realized one day, a strange phenomenon: Ricki's two brothers, aged 4 and 6, where playing “police” and “fireman” every day with their toy cars. Now THAT was not strange. What WAS strange is that the older would comment each time, “I am taking my son with me, and he does not have Down syndrome.” After he would say that statement, the four year old would make a similar comment.
Of course, the really terrible thing is that I realized that this had been going on daily for about a month, without my paying rapt attention to it. So later that day, I sat each of them down for a talk (separately), explaining, in easy terms, that they were not at added risk, as adults, of having children with Down syndrome. Hopefully their children will be “normal”.
The next day they were back to playing “police” and “firefighter”, without any extra comments.
So if you have a special child, and you think that his siblings are not concerned, or even aware, think again. You just may be surprised.