The Rasch modeling approach in developing equivalent wordlists in the Cantonese spoken word recognition test
Refereed conference paper presented and published in conference proceedings


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AbstractPurpose of Study
Spoken word recognition tests have been widely used as a major outcome measurement in speech perception ability of individuals with hearing impairment. Equivalent word lists are essential for test repetition for performance comparison with different conditions. Yet, the methods employed in deriving the word lists vary enormously. This study aims at using a mathematical modelling known as Rasch analysis to derive wordlists with equivalent level of difficulty.
Methods
Word recognition performance on 255 children with normal hearing and 121 children with hearing impairment were collected on a word pool of 120 items. Item selection for building equivalent word list is based on qualitative and quantitative analyses where Rasch Analysis under the Item Response Theory were employed.
Results
Out of the 120 items, four items had an infit mean square statistics of >= 1.50 and 34 items had an outfit mean square statistics of >=1.50. Coupled with qualitative analyses including expert opinion and linguistic considerations, a total of 80 items were selected. With reference to the Rasch difficult measures, the 80 items were distributed into 4 word lists each with 20 items. Inter-list correlation coefficients of the 4 word lists ranged from 0.95 to 0.99 (p < 0.01).
Conclusions
Item Response Theory has been applied in recent clinical test development. The test validation process including the construction of the four equivalent word list has resulted in the accomplishment of a validated test known as the Cantonese Spoken Word Recognition Test (CanSWORT).
All Author(s) ListLee K. Y. S., Ng I. H. -Y., Lam J. H. S., Tong M. C. F.
Name of Conference10th Biennial Asia Pacific Conference on Speech, Language and Hearing (APCSLH 2017)
Start Date of Conference17/09/2017
End Date of Conference19/09/2017
Place of ConferenceNarita
Country/Region of ConferenceJapan
Proceedings Title10th Biennial Asia Pacific Conference on Speech, Language and Hearing (APCSLH 2017)
Year2017
Month9
Day19
Place of PublicationJapan
Pages154 - 154
LanguagesEnglish-United States
Keywordsspeech therapy, Cantonese spoken word, APCSLH

Last updated on 2021-27-01 at 11:22