Planning in Speech Production: Listener Adaptive Characteristics.

概要

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Listener adaptive characteristics in speech production were investigated by analyzing spoken dialogue between teachers and children. Dialogue was recorded during a game through which four teachers were asked to assess the speech perception of three hearing-impaired and four normally-hearing children. The following results were obtained. 1) The way of task explanation and used sentences were changed depending on whether the children were hearing-impaired or not. The teachers used more simple sentences and obtained more responses with the hearing-impaired than for the normally-hearing children. 2) The temporal structure of spoken sentences was also significantly changed. For the hearing-impaired, the teachers tended to lengthen syllable duration and to insert pauses in phonological phrase boundaries.<BR>These results suggest that the teachers controlled their speaking style to help the hearing-impaired understand dialogue. Listener oriented adaptation of speaking style seemed to affect the processes in speech production planning, including grammatical encoding by which sentences are formulated, and articulatory programming by which the temporal structure of speech is determined.
日本音声言語医学会の論文