Number Issues: Autism and Intellectual Disability
"Another difference between past and present autism diagnosis involves the presence of intellectual disabilities, adds Yeargin-Allsopp. During the 1960s and 1970s, the vast majority of those diagnosed with autism had an intellectual disability but today, only about 40% have one." --from CMAJThis does not equate to an 80% figure of ID for those with autistic disorder, no matter how one parses the numbers. In fact Yeargin-Allsop's 2003 study disconfirms the idea that most individuals with the AD diagnosis have ID. Some individuals are fond of the 80% number for ID and autism…