Document Type
Article
Language
eng
Format of Original
7 p.
Publication Date
8-2009
Publisher
American Speech-Language-Hearing Association
Source Publication
Journal of Speech, Language, and Hearing Research
Source ISSN
1092-4388
Original Item ID
doi: 10.1044/1092-4388(2009/08-0001)
Abstract
Purpose: To compare the phonological accuracy and speech intelligibility of boys with fragile X syndrome with autism spectrum disorder (FXS-ASD), fragile X syndrome only (FXS-O), Down syndrome (DS), and typically developing (TD) boys.
Method: Participants were 32 boys with FXS-O (3–14 years), 31 with FXS-ASD (5–15 years), 34 with DS (4–16 years), and 45 TD boys of similar nonverbal mental age. We used connected speech samples to compute measures of phonological accuracy, phonological process occurrence, and intelligibility.
Results: The boys with FXS, regardless of autism status, did not differ from TD boys on phonological accuracy and phonological process occurrence but produced fewer intelligible words than did TD boys. The boys with DS scored lower on measures of phonological accuracy and occurrence of phonological processes than all other groups and used fewer intelligible words than did TD boys. The boys with FXS and the boys with DS did not differ on measures of intelligibility.
Conclusions: Boys with FXS, regardless of autism status, exhibited phonological characteristics similar to those of younger TD children but were less intelligible in connected speech. Boys with DS showed greater delays in all phonological measures than the boys with FXS and the TD boys.
Recommended Citation
Barnes, Elizabeth; Roberts, Joanne; Long, Steven; Martin, Gary E.; Berni, Mary C.; Mandulak, Kerry C.; and Sideris, John, "Phonological Accuracy and Intelligibility in Connected Speech of Boys with Fragile X Syndrome or Down Syndrome" (2009). Speech Pathology and Audiology Faculty Research and Publications. 27.
https://epublications.marquette.edu/spaud_fac/27
Comments
Accepted version. Journal of Speech, Language, and Hearing Research, Vol. 52, No. 4 (August 2009): 1045-1061. DOI. © 2009 American Speech-Language-Hearing Association. Used with permission.