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Autism Res. 2011 Jun;4(3):177-88. doi: 10.1002/aur.183. Epub 2011 Feb 9.

Phonology and vocal behavior in toddlers with autism spectrum disorders.

Author information

1
Yale Child Study Center, Yale University, New Haven, Connecticut 06510, USA. elizabeth.schoen@yale.edu

Abstract

The purpose of this study is to examine the phonological and other vocal productions of children, 18-36 months, with autism spectrum disorder (ASD) and to compare these productions to those of age-matched and language-matched controls. Speech samples were obtained from 30 toddlers with ASD, 11 age-matched toddlers and 23 language-matched toddlers during either parent-child or clinician-child play sessions. Samples were coded for a variety of speech-like and nonspeech vocalization productions. Toddlers with ASD produced speech-like vocalizations similar to those of language-matched peers, but produced significantly more atypical nonspeech vocalizations when compared to both control groups. Toddlers with ASD show speech-like sound production that is linked to their language level, in a manner similar to that seen in typical development. The main area of difference in vocal development in this population is in the production of atypical vocalizations. Findings suggest that toddlers with ASDs do not tune into the language model of their environment. Failure to attend to the ambient language environment negatively impacts the ability to acquire spoken language.

PMID:
21308998
PMCID:
PMC3110574
DOI:
10.1002/aur.183
[Indexed for MEDLINE]
Free PMC Article
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