Speech Production Accuracy and Variability in Young Cochlear Implant Recipients: Comparisons With Typically Developing Age-Peers PurposeThe speech production accuracy and variability scores of 6 young cochlear implant (CI) recipients with 2 years of device experience were compared with those of typically developing (TD) age-peers.MethodWords from the First Words Speech Test (FWST; Ertmer, 1999) were imitated 3 times to assess the accuracy and variability of initial ... Article
Article  |   February 01, 2011
Speech Production Accuracy and Variability in Young Cochlear Implant Recipients: Comparisons With Typically Developing Age-Peers
 
Author Affiliations & Notes
  • David J. Ertmer
    Purdue University, West Lafayette, IN
  • Lisa A. Goffman
    Purdue University, West Lafayette, IN
  • Contact author: David J. Ertmer, Department of Speech, Language, and Hearing Sciences, Purdue University, 500 Oval Drive, West Lafayette, IN 47907. E-mail: dertmer@purdue.edu.
Article Information
Hearing Aids, Cochlear Implants & Assistive Technology / Speech, Voice & Prosody / Hearing
Article   |   February 01, 2011
Speech Production Accuracy and Variability in Young Cochlear Implant Recipients: Comparisons With Typically Developing Age-Peers
Journal of Speech, Language, and Hearing Research, February 2011, Vol. 54, 177-189. doi:10.1044/1092-4388(2010/09-0165)
History: Received August 7, 2009 , Revised January 7, 2010 , Accepted May 14, 2010
 
Journal of Speech, Language, and Hearing Research, February 2011, Vol. 54, 177-189. doi:10.1044/1092-4388(2010/09-0165)
History: Received August 7, 2009; Revised January 7, 2010; Accepted May 14, 2010
Web of Science® Times Cited: 23

PurposeThe speech production accuracy and variability scores of 6 young cochlear implant (CI) recipients with 2 years of device experience were compared with those of typically developing (TD) age-peers.

MethodWords from the First Words Speech Test (FWST; Ertmer, 1999) were imitated 3 times to assess the accuracy and variability of initial consonants, vowels, and words. The initial consonants in the 4 sets of the FWST followed a typical order of development.

ResultsThe TD group produced targets with high accuracy and low variability. Their scores across FWST sets reflected the expected order of development. The CI group produced most targets less accurately and with more variability than the TD children. Relatively high accuracy for the consonants of Sets 1 and 2 indicated that these phonemes were acquired early and in a typical developmental order. A trend toward greater accuracy for Set 4 as compared with Set 3 suggested that later-emerging consonants were not acquired in the expected order. Variability was greatest for later-emerging initial consonants and whole words.

DiscussionAlthough considerable speech production proficiency was evident, age-level performance was not attained after 2 years of CI experience. Factors that might influence the order of consonant acquisition are discussed.

Acknowledgments
This research project was completed with support from National Institute on Deafness and Other Communication Disorders Grants 1R030DC04226-03 and R01DC007863, awarded to the first author. We gratefully acknowledge the assistance of Kristin Corbett, Christy Macak, Elesha Sharp, and Jen Slanker in data collection and analysis. We are especially appreciative of the children and their parents, whose cooperation made this investigation possible.
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