How many of us are only children?

I thought I'd ask as because so many of the problems reported by only children, like difficulties with socialising and needing more time alone are also shared by autists. I wondered if only children were more likely to be autistic or come further along the autistic spectrum without being autistic because of things like prefering your own company?

But from the replies so far it would seem not.

I thought I'd ask as because so many of the problems reported by only children, like difficulties with socialising and needing more time alone are also shared by autists. I wondered if only children were more likely to be autistic or come further along the autistic spectrum without being autistic because of things like prefering your own company?

But from the replies so far it would seem not.

It's still a good question.

This is how science works. Hypothesis (your post), data (other people's posts), conclusion. 

In the reverse case, my niece is an only child and she is one of the most well balanced people I know. Totally knows her own emotions. She does have strong interests though - which is where we overlap.