Generalizability theory and item response theory


Glas, C.A.W. (2012) Generalizability theory and item response theory. In: T.J.H.M. Eggen & B.P. Veldkamp (Eds.), Psychometrics in practice at RCEC. E-book, Adobe pdf version, pp. 1-13. ISBN 9789036533744

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Abstract:Item response theory is usually applied to items with a selected-response format, such as multiple choice items, whereas generalizability theory is usually applied to constructed-response tasks assessed by raters. However, in many situations, raters may use rating scales consisting of items with a selected-response format. This chapter presents a short overview of how item response theory and generalizability theory were integrated to model such assessments. Further, the precision of the estimates of the variance components of a generalizability theory model in combination with two- and three-parameter models is assessed in a small simulation study
Item Type:Book Section
Copyright:© RCEC, Cito/University of Twente, Enschede, Netherlands, 2012
Faculty of Behavioural, Management and Social sciences (BMS)
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