In an article that Dr. Steve Ranicki wrote over two years ago about why more males than females are diagnosed with Autism Spectrum Disorders. Dr. Ranicki explains this theory in great detail. see the attached document below.
Read the Psych Central article on the matter: http://psychcentral.com/news/2012/10/19/autism-affects-cognition-differently-in-males-females/46336.html, then check out Dr. Steve Ranicki's article. He hit the nail on the head, just didn't get it published.
Dr. Stephen Ranicki