Abstract

The main question in this study was whether Ss stuiter less under DAF when speaking with an accent such as a nasal twang. The hypothesis was verified: A group of 21 Ss stuttered less under DAF when speaking with a nasal accent than when speaking normally. This effect was shown to be due to: (1) The change in the acoustic output as a result of speaking with the accent. A passively produced distortion of the returning feedback (after Held, 1961), which was similar to the actively articulated nasal accent, also caused the Ss to stutter less than normally. (2) Paying less attention to the disruptive feedback. The Ss were shown to pay less attention to nasal feedback, probably because producing a nasal accent requires greater attention to articulation. These results were not due to a reduction in the intelligibility of the nasal feedback, which was just as intelligible as the S’s normal voice, even in noise. The significance of these findings for general theories of DAF and pathological stuttering were discussed.

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