A Subtype of Severe Expressive Language Delay: Analysis of Speechless Children Using Acquisition Model of Expressive Language.

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  • 症状分類Ｂ群（音声発信困難）の１類型　発信行動習得モデルによる分析の試み
  • Analysis of Speechless Children Using Acquisition Model of Expressive Language
  • ―発信行動習得モデルによる分析の試み―

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The development of expressive language in four speechless autistic children was reported. They suffered mild to moderate mental retardation, and in contrast to relatively good speech comprehension, they were speechless at the starting period of their intervention programs (age 4-6) .<BR>Their developmental process was analyzed using the “acquisition model of expressive language, ” which was designed to analyze the features of the process by which expressive language is acquired, correlating roles of gestures, letters and speech imitation. Analyses demonstrated that all four children acquired oral expression following the same sequential order : 1) expressive gesticulate signs, 2) imitation of oral movement or single syllables, 3) utterance of polysyllabic words with the support of Kana letters, 4) imitation of polysyllabic words without the support of letters, 5) spontaneous utterance of polysyllabic words without the support of letters. These results indicated that there exists a subtype of severe developmental expressive language delay which consists of autistic children who follow the sequential order of expressive language acquisition mentioned above.<BR>Correlates with severe expressive language delay were also discussed. (Children with severe expressive language delay : speech-delayed children who can at least understand two-word combinations but can speak less than a few words, including children with autism or mental retardation.)

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