Speech Intelligibility in Deaf Children After Long-Term Cochlear Implant Use Purpose This study investigated long-term speech intelligibility outcomes in 63 prelingually deaf children, adolescents, and young adults who received cochlear implants (CIs) before age 7 (M = 2;11 [years;months], range = 0;8–6;3) and used their implants for at least 7 years (M = 12;1, range = 7;0–22;5). Method ... Research Article
Research Article  |   December 01, 2014
Speech Intelligibility in Deaf Children After Long-Term Cochlear Implant Use
 
Author Affiliations & Notes
  • Jessica L. Montag
    Indiana University, Bloomington
  • Angela M. AuBuchon
    Indiana University, Bloomington
  • David B. Pisoni
    Indiana University, Bloomington
  • William G. Kronenberger
    Indiana University School of Medicine, Indianapolis
  • Disclosure: The authors have declared that no competing interests existed at the time of publication.
    Disclosure: The authors have declared that no competing interests existed at the time of publication.×
  • Correspondence to Jessica L. Montag: jlmontag@indiana.edu
  • Editor: Nancy Tye-Murray
    Editor: Nancy Tye-Murray×
  • Associate Editor: Richard Dowell
    Associate Editor: Richard Dowell×
Article Information
Speech, Voice & Prosodic Disorders / Hearing Disorders / Hearing Aids, Cochlear Implants & Assistive Technology / Hearing / Research Articles
Research Article   |   December 01, 2014
Speech Intelligibility in Deaf Children After Long-Term Cochlear Implant Use
Journal of Speech, Language, and Hearing Research, December 2014, Vol. 57, 2332-2343. doi:10.1044/2014_JSLHR-H-14-0190
History: Received July 9, 2014 , Revised September 10, 2014 , Accepted September 11, 2014
 
Journal of Speech, Language, and Hearing Research, December 2014, Vol. 57, 2332-2343. doi:10.1044/2014_JSLHR-H-14-0190
History: Received July 9, 2014; Revised September 10, 2014; Accepted September 11, 2014
Web of Science® Times Cited: 12

Purpose This study investigated long-term speech intelligibility outcomes in 63 prelingually deaf children, adolescents, and young adults who received cochlear implants (CIs) before age 7 (M = 2;11 [years;months], range = 0;8–6;3) and used their implants for at least 7 years (M = 12;1, range = 7;0–22;5).

Method Speech intelligibility was assessed using playback methods with naïve, normal-hearing listeners.

Results Mean intelligibility scores were lower than scores obtained from an age- and nonverbal IQ–matched, normal-hearing control sample, although the majority of CI users scored within the range of the control sample. Our sample allowed us to investigate the contribution of several demographic and cognitive factors to speech intelligibility. CI users who used their implant for longer periods of time exhibited poorer speech intelligibility scores. Crucially, results from a hierarchical regression model suggested that this difference was due to more conservative candidacy criteria in CI users with more years of use. No other demographic variables accounted for significant variance in speech intelligibility scores beyond age of implantation and amount of spoken language experience (assessed by communication mode and family income measures).

Conclusion Many factors that have been found to contribute to individual differences in language outcomes in normal-hearing children also contribute to long-term CI users' ability to produce intelligible speech.

Acknowledgments
This work was supported by National Institute on Deafness and Other Communication Disorders Grants R01DC009581 and T32DC000012, awarded to the third author.
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