SourceClinical Linguistics & Phonetics, 16, 6, (2002), pp. 461-83
Article / Letter to editor
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Interfacultaire Werkgroep Taal en Spraak (IWTS)
Clinical Linguistics & Phonetics
SubjectDisturbances of cerebral development in the young child.; Hearing and Communication Disorders; Psychological antecedents; Cerebrale ontwikkelingsstoornissen bij het jonge kind; Gehoor en communicatie; Psychologische determinanten
The aim of this study was to enhance our insight into the underlying deficit in developmental apraxia of speech (DAS). In particular, the involvement of planning and/or programming of speech movements in context was tested by analysing coarticulatory cohesion. For this purpose, second formant frequency measurements were conducted in repetitions of nonsense utterances ([[symbol: see text]] C = /s,x,b,d/; V = /i.a.u/), and compared across nine children with DAS, six normally speaking (NS) children and six adult women. The results showed both intra- and intersyllabic anticipatory coarticulation in NS children and adult women, in which the intersyllabic coarticulation was stronger in NS children than in adult women. The children with DAS showed more variability as compared to NS children, made, on average, less distinction between the vowels, and showed individually idiosyncratic coarticulation patterns. These results are discussed in the light of a delay as well as a deviance of speech development in children with DAS.
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