Please use this identifier to cite or link to this item: http://hdl.handle.net/10125/38585

IRT Discrimination Interpretation in Criterion-Referenced Language Testing

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dc.contributor.author Hudson, Thom
dc.date.accessioned 2015-12-15T00:48:44Z
dc.date.available 2015-12-15T00:48:44Z
dc.date.issued 1990
dc.identifier.uri http://hdl.handle.net/10125/38585
dc.description.abstract This study investigates relationships among the IRT one-parameter fit statistics, the two-parameter slope parameter and traditional biserial correlations in terms of the role these indices play in criterion-referenced language test construction. It discusses the assumptions of the two models and how these assumptions can affect criterion-referenced test construction and interpretation. The study then specifically examines how the indices operate in terms of item discrimination when items are designed to determine whether or not and examinee is at a specific level of ability. Examinees in Mexico, Saudi Arabia and Japan were administered one of two forms of a functional test containing (Form A n=430, k=94: Form B n=400, k=95). The data were analyzed using the two IRT models and the results were compared. The results indicate strong relationships between biserial correlation, two-parameter slope, and one-parameter infit and outfit. The implications of these strong relationships for interpreting the indices are discussed.
dc.format.extent 30 pages
dc.language eng
dc.relation.ispartof University of Hawai'i Working Papers in English as a Second Language 9(2)
dc.title IRT Discrimination Interpretation in Criterion-Referenced Language Testing
dc.type Working Paper
dc.type.dcmi Text
dc.contributor.department University of Hawaii at Manoa. Department of English as a Second Language.
dc.format.digitalorigin reformatted digital
Appears in Collections: Working Papers (1982-2000)


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