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ERIC Number: EJ1094745
Record Type: Journal
Publication Date: 2016-May
Pages: 9
Abstractor: As Provided
Reference Count: 53
ISSN: ISSN-1525-7401
Vowel Intelligibility in Children with and without Dysarthria: An Exploratory Study
Levy, Erika S.; Leone, Dorothy; Moya-Gale, Gemma; Hsu, Sih-Chiao; Chen, Wenli; Ramig, Lorraine O.
Communication Disorders Quarterly, v37 n3 p171-179 May 2016
Children with dysarthria due to cerebral palsy (CP) present with decreased vowel space area and reduced word intelligibility. Although a robust relationship exists between vowel space and word intelligibility, little is known about the intelligibility of vowels in this population. This exploratory study investigated the intelligibility of American English (AE) vowels produced by children with dysarthria and typically developing children (TD). Three CP and five TD repeated words with contrastive vowels /i-?/, /ae-?/, /?-?/, /o-u/ produced by a native AE adult. Adult listeners transcribed the utterances orthographically and rated their ease of understanding. Overall, CP presented with less-intelligible vowels than TD. For CP, a trend was found with the lowest intelligibility for /?/ (CP = 7%, TD = 66%), /?/ (CP = 30%, TD = 82%), and /?/ (CP = 38%, TD = 99%), and more heterogeneous vowel confusions; however, intelligibility differences between vowels did not reach statistical significance. Clinical implications include that, unless further studies show vowel-specific effects, treatment targeting the entire vowel system may be warranted for increasing intelligibility.
SAGE Publications and Hammill Institute on Disabilities. 2455 Teller Road, Thousand Oaks, CA 91320. Tel: 800-818-7243; Tel: 805-499-9774; Fax: 800-583-2665; e-mail:; Web site:
Publication Type: Journal Articles; Reports - Research
Education Level: N/A
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A
Identifiers - Location: New York