Regulation of Speech in Youth With Down Syndrome and Intellectual Disabilities: Comparison to Other Youth With Intellectual Disabilities

TAKAGI Junya, ITO Tomohiko

doi:10.6033/tokkyou.49.229

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Other Title

ダウン症児の発話の調節能力の特徴
ダウン症児の発話の調節能力の特徴 : 非ダウン症知的障害児との比較
ダウンショウジノハツワノチョウセツノウリョクノトクチョウ : ヒダウンショウチテキショウガイジトノヒカク
―非ダウン症知的障害児との比較―

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Description

The present study investigated characteristics of speech regulation in young people with Down syndrome. The participants were 16 youth with Down syndrome (13 boys, 3 girls; average CA 14 : 8), and 16 mental age-matched youth with intellectual disabilities but not Down syndrome (12 boys, 4 girls; average CA 14 : 4). All participants were individually administered 2 tasks: imitation of speech and regulation of speech. Their responses were evaluated in terms of the accuracy of imitation and of the regulation of speech rate and speech volume. In the imitation task, stimulus pictures were presented, and the names of the pictures were spoken by a narrator slowly or in a low voice, after which the participants were requested to imitate the narrator. In the regulation task, the participants were requested to name each picture slowly or in a low voice. The youth with Down syndrome performed significantly less well on speech rate regulation than did the other group. However, no significant differences were found between the 2 groups in speech volume on the regulation task. Also, no significant differences were found between the 2 groups on either speech rate or speech volume on the imitation task. These results suggest that youth with Down syndrome are less able to regulate their speech rate, but that this is due not to a lack of awareness of their speech rate, but rather to a weakness in speech regulation itself.

Journal

The Japanese Journal of Special Education

The Japanese Journal of Special Education 49 (3), 229-236, 2011

The Japanese Association of Special Education

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