Jon81 wrote:
I would definitely go as far as saying liking trains is a red flag for autism. No doubt should they include that in the DSM. Both boys are really into trains. Their cousin who is autistic is into trains. I'm not sure if it's the trains alone or the fact that they are lined up nicely after each other.
It seems to be very common and has helped people consider whether they or their child may be autistic.
I'm against the idea of including it in the DSM though. Special interests are already included and trains is already the most common example people use for autistic special interests. Putting even more focus on it will, if anything, hamper seeking or receiving a diagnosis for people with less typical special interests, not help those with typical ones.