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Journal of Deaf Studies and Deaf Education Advance Access originally published online on June 25, 2007
The Journal of Deaf Studies and Deaf Education 2007 12(4):472-485; doi:10.1093/deafed/enm031
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© The Author 2007. Published by Oxford University Press. All rights reserved. For Permissions, please email: journals.permissions@oxfordjournals.org

Nonword Repetition with Spectrally Reduced Speech: Some Developmental and Clinical Findings from Pediatric Cochlear Implantation

Rose A. Burkholder-Juhasz

University of Michigan

Susannah V. Levi

Indiana University

Caitlin M. Dillon

Haskins Laboratories, New Haven

David B. Pisoni

Indiana University


  Abstract

Nonword repetition skills were examined in 24 pediatric cochlear implant (CI) users and 18 normal-hearing (NH) adult listeners listening through a CI simulator. Two separate groups of NH adult listeners assigned accuracy ratings to the nonword responses of the pediatric CI users and the NH adult speakers. Overall, the nonword repetitions of children using CIs were rated as more accurate than the nonword repetitions of the adults. The nonword repetition accuracy ratings from both groups of subjects were correlated with open- and closed-set word recognition scores and forward digit spans. Only the perceptual accuracy scores from pediatric CI users were correlated with measures of speech production accuracy. These results suggest that although the pediatric CI users had more experience and success in perceiving speech under degraded auditory conditions, developmental differences in their memory skills prevent them from performing as well on working memory tasks as mature listeners.

Correspondence should be sent to Susannah V. Levi, Speech Research Laboratory, Department of Psychological and Brain Sciences, Indiana University, Bloomington, Indiana 47405 (e-mail: svlevi{at}indiana.edu).

Received February 6, 2007; revised April 26, 2007; accepted May 4, 2007


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