The autistic brain is, on average, larger and heavier than a normal brain.
"Autism presents an interesting neuro-developmental puzzle, because it is not like mental retardation, where you see deficits across the board. Persons with autism can have preserved intellectual functions" http://www.autismcoach.com/Underconnectivity%20Theory%20of%20Autism.htm
The focus of this web page is going to be on the Wernicke's and Bronca Area of the brain and the connection between the two in children with autism.