Autism Spectrum Disorder Reclassified: A Second Look at the 1980s Utah/UCLA A…

Abstract The purpose of the present study was to re-examine diagnostic data from a state-wide autism prevalence study (n = 489) conducted in the 1980s to investigate the impact of broader diagnostic criteria on autism spectrum disorder (ASD) case status. Sixty-four (59 %) of the 108 originally ‘‘Diagnosed Not Autistic’’ met the current ASD case definition. The average IQ estimate in …