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Updated: May 4, 2026

Conscious and Non-conscious Representations of Emotional Faces in Asperger's Syndrome
Published on: July 31, 2016
A meta-analysis of differences in IQ profiles between individuals with Asperger's disorder and high-functioning
Hsu-Min Chiang1, Luke Y Tsai, Ying Kuen Cheung
1Department of Health and Behavior Studies, Teachers College, Columbia University, New York, NY, USA, hchiang@tc.columbia.edu.
Abstract:
A meta-analysis was performed to examine differences in IQ profiles between individuals with Asperger's disorder (AspD) and high-functioning autism (HFA). Fifty-two studies were included for this study. The results showed that (a) individuals with AspD had significantly higher full-scale IQ, verbal IQ (VIQ), and performance IQ (PIQ) than did individuals with HFA; (b) individuals with AspD had significantly higher VIQ than PIQ; and (c) VIQ was similar to PIQ in individuals with HFA. These findings seem to suggest that AspD and HFA are two different subtypes of Autism. The implications of the present findings to DSM-5 Autism Spectrum Disorder are discussed.
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