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Categorical Speech Perception in Adults with Autism Spectrum Conditions

Lookup NU author(s): Mary Stewart, Dr Alexandra Petrou



This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License (CC BY-NC 4.0).


This study tested whether individuals with autism spectrum conditions (n=23) show enhanced discrimination of acoustic differences that signal a linguistic contrast (i.e., /g/ versus /k/ as in ‘goat’ and ‘coat’) and whether they process such differences in a less categorical fashion as compared with 23 IQ-matched typically developed adults. Tasks administered were nonverbal IQ, verbal IQ, 5 language measures, a speech perception task, and the ADOS. The speech perception task measured the discrimination of paired exemplars along the /g/-/k/ continuum. Individuals with autism spectrum conditions did not show enhanced discrimination of speech perception. Categorical speech perception was correlated with verbal ability of reading, lexical decision, and verbal IQ in individuals with ASC.

Publication metadata

Author(s): Stewart ME, Petrou AM, Ota M

Publication type: Article

Publication status: Published

Journal: Journal of Autism and Developmental Disorders

Year: 2018

Volume: 48

Issue: 1

Pages: 72-82

Print publication date: 01/01/2018

Online publication date: 11/09/2017

Acceptance date: 11/09/2017

Date deposited: 14/11/2017

ISSN (print): 0162-3257

ISSN (electronic): 1573-3432

Publisher: Springer New York LLC


DOI: 10.1007/s10803-017-3284-0


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