Abstract
ABSTRACTTwelve stutterers and twelve non‐stutterers each read out loud following three types of rehearsal: overt rehearsal of the material, silent rehearsal, or inappropriate overt rehearsal (counting backwards). Silent rehearsal impaired performance (fluency) compared to the other conditions. Heart rate measures (HR) and electro‐myography (EMG) did not differentiate stutterers from non‐stutterers, except that EMG immediately before speech was significantly elevated after silent rehearsal for stutterers. The data suggest that silent rehearsal may be accompanied by excessively high muscle tone, and impair rather than facilitate fluency.
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