Short-Term Effects of Speech Shadowing Training on Stuttering

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  • A-Rong-Na
    Research Institute of National Rehabilitation Center for Persons with Disabilities
  • Sakai Naomi
    Research Institute of National Rehabilitation Center for Persons with Disabilities
  • Mori Koichi
    Research Institute of National Rehabilitation Center for Persons with Disabilities

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  • 短期シャドーイング訓練の吃音に対する効果

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Abstract

The present study investigated the short-term effects of speech shadowing training in 16 people who stutter (PWS). Speech shadowing is a task in which subjects listen to a spoken passage and repeat it with the shortest possible delay. In a subgroup of 8 PWS whose reading contained more than 3% of stuttered phrases before shadowing, the frequency of stuttering, especially blocking, and the mean duration of stuttering symptoms decreased during shadowing. They also produced significantly fewer dysfluencies in the reading-aloud task after shadowing than in the initial reading task, regardless of use of the same or different reading materials. The other 8 PWS with fewer than 3% dysfluencies before shadowing showed no significant change in stuttering frequency during or after shadowing. Thus, speech shadowing has a short-term aftereffect of reducing the frequency of stuttering, as well as possible usefulness by giving a chance to those with frequent symptoms to experience fluent speech during training. Analysis of the participants' free comments after the training based on the KJ (card sorting) method showed that they felt their speech was more fluent during shadowing than usual, and that they were looking forward to more shadowing training.

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