2cents: c. Aside from the many other criteria that were added, age is a huge factor, the DSM had an age restriction of needing to be diagnosed prior to 30 months.
Since the majority of children with ASD are diagnosed after 30 months, they were not included in the DSM III, so the increase is not an increase in prevalence, it is an increase in diagnosis.
Since children begin talking between 12-18 months, the NON-VERBAL Autistic children were diagnosed BEFORE 30 Months – even today!
So the Expanded definition of Autism to after 30 months DOES NOT explain how
Non-Verbal Autism went from 1:10,000 to 1:150!!!
But I don’t expect 2Cents to ever admit he/she is WRONG and is spreading DISINFORMATION
to cover up that Vaccines cause Autism!