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The Hypothesis of Apraxia of Speech in Children with Autism Spectrum Disorder
Journal of Autism & Developmental Disorders
  • Lawrence D. Shriberg
  • Rhea Paul, Sacred Heart University
  • Lois M. Black
  • Jan P. van Santen
Document Type
Peer-Reviewed Article
Publication Date

In a sample of 46 children aged 4-7 years with Autism Spectrum Disorder (ASD) and intelligible speech, there was no statistical support for the hypothesis of concomitant Childhood Apraxia of Speech (CAS). Perceptual and acoustic measures of participants' speech, prosody, and voice were compared with data from 40 typically-developing children, 13 preschool children with Speech Delay, and 15 participants aged 5-49 years with CAS in neurogenetic disorders. Speech Delay and Speech Errors, respectively, were modestly and substantially more prevalent in participants with ASD than reported population estimates. Double dissociations in speech, prosody, and voice impairments in ASD were interpreted as consistent with a speech attunement framework, rather than with the motor speech impairments that define CAS.


Version posted here is the NIH Public Access Author Manuscript. PMCID: PMC3033475

Citation Information

Published in final edited form as: Shriberg, Lawrence D. et al. "The Hypothesis of Apraxia of Speech in Children with Autism Spectrum Disorder." Journal of Autism & Developmental Disorders 41.4 (2011): 405-426.