While the disfluencies produced in stuttered speech surface at a significantly higher rate than those found in normal speech, it is less clear from the previous stuttering literature how exactly these disfluency patterns might differ in kind [Wingate (1988)]. One tendency found in normal speech is for disfluencies to remove acoustic evidence of coarticulation patterns [Shriberg (1999)]. This appears attributable to lexical search errors which prevent a speaker from accessing a word’s phonological form; that is, coarticulation between words will fail to occur when segmental material from the following word is not retrieved. Since stuttering is a disorder which displays evidence of phonological but not lexical impairment, it was predicted that stuttered disfluencies would differ from normal errors in that the former would reveal acoustic evidence of word transitions. Eight speakers four stutterers and four control subjects participated in a narrative‐production task, spontaneously describing a picture book. Preliminary results suggest that while both stutterers and controls did produce similar rates of disfluencies occurring without coarticulatory evidence, only the stutterers regularly produced disfluencies reflecting this transitional evidence. These results support the argument that disfluencies proper to stuttering result from a phonological deficit, while normal disfluencies are generally lexically based.
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September 2005
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September 01 2005
Coarticulatory evidence in stuttered disfluencies
Timothy Arbisi‐Kelm
Timothy Arbisi‐Kelm
Dept. of Linguist., UCLA, 3125 Campbell Hall, Los Angeles, CA 90095
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J. Acoust. Soc. Am. 118, 1966 (2005)
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Timothy Arbisi‐Kelm; Coarticulatory evidence in stuttered disfluencies. J. Acoust. Soc. Am. 1 September 2005; 118 (3_Supplement): 1966. https://doi.org/10.1121/1.4781654
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