An Application of Item Response Theory and the Rasch Model in Speech Recognition Test Materials Purpose The purpose of this study was to describe an attempt to apply item-response theory (IRT) and the Rasch model to construction of speech-recognition tests. A set of word-recognition test items applicable to children as young as 3 years old—with any level of hearing sensitivity, with or without using hearing ... Research Article
Research Article  |   June 01, 2016
An Application of Item Response Theory and the Rasch Model in Speech Recognition Test Materials
 
Author Affiliations & Notes
  • Iris H.-Y. Ng
    Department of Otorhinolaryngology, Head & Neck Surgery, The Chinese University of Hong Kong, China
  • Kathy Y. S. Lee
    Department of Otorhinolaryngology, Head & Neck Surgery, The Chinese University of Hong Kong, China
  • Joffee H. S. Lam
    Department of Otorhinolaryngology, Head & Neck Surgery, The Chinese University of Hong Kong, China
  • C. Andrew van Hasselt
    Department of Otorhinolaryngology, Head & Neck Surgery, The Chinese University of Hong Kong, China
  • Michael C. F. Tong
    Department of Otorhinolaryngology, Head & Neck Surgery, The Chinese University of Hong Kong, China
  • 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 Michael C. F. Tong: mtong@ent.cuhk.edu.hk
  • Editor and Associate Editor: Larry Humes
    Editor and Associate Editor: Larry Humes×
Article Information
Hearing & Speech Perception / Research Articles
Research Article   |   June 01, 2016
An Application of Item Response Theory and the Rasch Model in Speech Recognition Test Materials
American Journal of Audiology, June 2016, Vol. 25, 142-152. doi:10.1044/2015_AJA-15-0025
History: Received May 10, 2015 , Revised July 10, 2015 , Accepted December 22, 2015
 
American Journal of Audiology, June 2016, Vol. 25, 142-152. doi:10.1044/2015_AJA-15-0025
History: Received May 10, 2015; Revised July 10, 2015; Accepted December 22, 2015
Web of Science® Times Cited: 1

Purpose The purpose of this study was to describe an attempt to apply item-response theory (IRT) and the Rasch model to construction of speech-recognition tests. A set of word-recognition test items applicable to children as young as 3 years old—with any level of hearing sensitivity, with or without using hearing devices—was developed.

Method Test items were constructed through expert consultation and by reference to some established language corpora, validated with 121 participants with various degrees of hearing loss and 255 with typical hearing. IRT and the Rasch model were applied to evaluate item quality.

Results Eighty disyllabic word items were selected in accordance with IRT. The speech-recognition abilities of the 376 young participants are reported. The IRT analyses on this set of data are also discussed.

Conclusions A new set of speech-recognition test materials in Cantonese Chinese has been developed. Construction of short equivalent lists may be performed in accordance with IRT item qualities. Clinical applications of this test tool in the particular language population are discussed.

Acknowledgments
This study was supported by the Research Grants Council of the Hong Kong Special Administrative Region, China (Project No. 446509), awarded to Kathy Y. S. Lee. The production of this clinical assessment tool to evaluate spoken-word recognition for people with hearing loss is supported by the Knowledge Transfer Fund at the Chinese University of Hong Kong (KPF14ICF03), awarded to Kathy Y. S. Lee. The authors would also like to thank Anthony Yick-Pang Lee for his valuable support and statistical advice.
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