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Validity of maximum performance tasks to diagnose motor speech disorders in children.

In a previous study a diagnostic procedure was developed to assess motoric involvement in clear cases of developmental apraxia of speech (DAS) and spastic dysarthria, as well as normal-speaking children. The aim of the present study is to cross-validate this diagnostic procedure. To achieve this aim...

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Published in:Clinical Linguistics & Phonetics Vol. 13; no. 1; pp. 1 - 24
Main Authors: Thoonen G, Maassen B, Gabreels F, Schreuder R
Format: research tables/charts Journal Article
Published: Taylor & Francis Ltd Jan1999
Online Access:View this record in EBSCOhost
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      dt: Jan1999
      vid: 13
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      pub: Taylor & Francis Ltd
      place: Philadelphia, Pennsylvania
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        1999041893
        10.1080/026992099299211
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        atl: Validity of maximum performance tasks to diagnose motor speech disorders in children.
      aug:
        au:
          Thoonen G
          Maassen B
          Gabreels F
          Schreuder R
        affil: Centre of Child Neurology, University Hospital Nijmegen, PO Box 9101, 6500 HB Nijmegen, The Netherlands
      sug:
        subj:
          Apraxia Diagnosis
          Dysarthria Diagnosis
          Speech and Language Assessment Evaluation
          Funding Source
          Validation Studies
          Protocols
          Case Control Studies
          Child
          Female
          Male
          Algorithms
          Predictive Validity
          One-Way Analysis of Variance
          Descriptive Statistics
          Language Tests
          Human
          Child: 6-12 years
          Female
          Male
      ab: In a previous study a diagnostic procedure was developed to assess motoric involvement in clear cases of developmental apraxia of speech (DAS) and spastic dysarthria, as well as normal-speaking children. The aim of the present study is to cross-validate this diagnostic procedure. To achieve this aim the maximum performance tasks of the protocol, consisting of maximum vowel and fricative prolongation, and maximum syllable repetition, were administered to less clear cases of DAS and spastic dysarthria, children with a speech disorder of unknown origin and newly selected normal-speaking children (total number of children in the study, 72; aged predominantly between 4 and 12 years). The results showed that spastic dysarthria can be diagnosed on the basis of the maximum rate of repetitive sequences ('papa ...', 'tata ...', 'kaka ...') in combination with maximum vowel prolongation. DAS can be diagnosed on the basis of the maximum rate of alternating sequences ('pataka ...') in combination with maximum fricative prolongation. Using the diagnosis of speech-language pathologists as a criterion, sensitivity and specificity values were obtained ranging from 89 to 100%. Among the children with a speech disorder of unknown origin significant dysarthric or apraxic involvement was observed. Thus, it can be concluded that the diagnostic procedure yields quantitative measures of the degree to which dysarthria or apraxia plays a role in the development and maintenance of speech disorders in children.
      pubtype: Academic Journal
      doctype:
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        tables/charts
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      ougenre: Article
    language: English
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