発達性読み書き障害児を対象とした文字単位の音読時間計測によるひらがな読み能力の計測手法 Evaluation on Reading Ability for Developmental Dyslexia Using Measurement of the Voice Onset Time for Single Hiragana Character

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Many reports indicated that children with developmental dyslexia have distinctive disorder in reading ability, however, there are no studies to investigate such ability based upon the characteristics of quantitative measurement in reading single character. Purpose of this study is to develop an effective method to evaluate the reading ability quantitatively. Specifically, we built a system to precisely measure the voice onset time (VOT) for hiragana characters. Here we report the results of VOT measurements in both normal and dyslexic populations. A total of eight children with dyslexia, eight healthy children and 15 healthy adults participated in the study on informed consent basis. Characters independently composed of syllabic sounds (non-contracted and contracted sounds, 106 characters in total) were chosen as the target data sets. The system automatically detected each pause and VOT and determined the time length of pronunciation in milliseconds. As a result, the time to pronounce a single character by the children with dyslexia was significantly longer than that by the healthy children and adults. The difference in VOT between non-contracted and contracted sounds suggested that the phonetic difference may affect the VOT. In conclusion, our proposed system can evaluate the reading ability for dyslexic children and it also demonstrated the effectiveness to organize the optimal strategy for improving their reading ability.

収録刊行物

  • 計測自動制御学会論文集  

    計測自動制御学会論文集 43(3), 166-171, 2007-03-31 

    The Society of Instrument and Control Engineers

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各種コード

  • NII論文ID(NAID)
    10018866290
  • NII書誌ID(NCID)
    AN00072392
  • 本文言語コード
    JPN
  • 資料種別
    ART
  • ISSN
    04534654
  • NDL 記事登録ID
    8741312
  • NDL 雑誌分類
    ZM11(科学技術--科学技術一般--制御工学)
  • NDL 請求記号
    Z14-482
  • データ提供元
    CJP書誌  CJP引用  NDL  J-STAGE 
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