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Direct linkNevison, Cynthia D.; Blaxill, Mark – Journal of Autism and Developmental Disorders, 2017
Time trends in autism spectrum disorder (ASD) and intellectual disability (ID) prevalence from the United States Individuals with Disabilities Education Act data were computed from 2000 to 2011 for each state and each age from 6 to 17. These trends did not support the hypothesis that diagnostic substitution for ID can explain the ASD rise over…
Descriptors: Intellectual Disability, Pervasive Developmental Disorders, Autism, Disabilities
