Processing of Cues for Stop Consonant Voicing by Young Hearing-Impaired Listeners To assess whether young hearing-impaired listeners are as sensitive as normal-hearing children to the cues for stop consonant voicing, we presented stimuli from along VOT continua to young normal-hearing listeners and to listeners with mild, moderate, severe, and profound hearing impairments. The response measures were the location of the phonetic ... Research Article
Research Article  |   March 01, 1984
Processing of Cues for Stop Consonant Voicing by Young Hearing-Impaired Listeners
 
Author Affiliations & Notes
  • Deborah Johnson
    Boys Town National Institute, Omaha, NE
  • Patricia Whaley
    Arizona State University, Tempe
  • M. F. Dorman
    Arizona State University, Tempe
Article Information
Research Articles
Research Article   |   March 01, 1984
Processing of Cues for Stop Consonant Voicing by Young Hearing-Impaired Listeners
Journal of Speech, Language, and Hearing Research, March 1984, Vol. 27, 112-118. doi:10.1044/jshr.2701.112
History: Received June 21, 1982 , Accepted June 24, 1983
 
Journal of Speech, Language, and Hearing Research, March 1984, Vol. 27, 112-118. doi:10.1044/jshr.2701.112
History: Received June 21, 1982; Accepted June 24, 1983

To assess whether young hearing-impaired listeners are as sensitive as normal-hearing children to the cues for stop consonant voicing, we presented stimuli from along VOT continua to young normal-hearing listeners and to listeners with mild, moderate, severe, and profound hearing impairments. The response measures were the location of the phonetic boundaries, the change in boundaries with changes in place of articulation, and response variability. The listeners with normal hearing sensitivity and those with mild and moderate hearing impairments did not differ in performance on any response measure. The listeners with severe impairments did not show the expected change in VOT boundary with changes in place of articulation. Moreover, stimulus uncertainty (i.e., the number of possible choices in the response set) affected their response variability. One listener with profound impairment was able to process the cues for voicing in a normal fashion under conditions of minimum stimulus uncertainty. We infer from these results that the cochlear damage which underlies mild and moderate hearing impairment does not significantly alter the auditory representation of VOT. However, the cochlear damage underlying severe impairment, possibly interacting with high signal presentation levels, does alter the auditory representation of VOT.

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