A comparison of IRT model combinations for assessing fit in a mixed format elementary school science test

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dc.contributor.authorYılmaz, Hacı Bayram
dc.date.accessioned2021-02-19T21:20:53Z
dc.date.available2021-02-19T21:20:53Z
dc.date.issued2019
dc.departmentALKÜ
dc.description.abstractOpen ended and multiple choice questions are commonly placed on the same tests; however, there is a discussion on the effects of using different item types on the test and item statistics. This study aims to compare model and item fit statistics in a mixed format test where multiple choice and constructed response items are used together. In this 25-item fourth grade science test administered to 2351 students in 35 schools in Turkey, items are calibrated separately and concurrently utilizing different IRT models. An important aspect of this study is that the effect of the calibration method on model and item fit is investigated on real data. Firstly, while the 1-, 2-, and 3-Parameter Logistic models are utilized to calibrate the binary coded items, the Graded Response Model and the Generalized Partial Credit Model are used to calibrate the open-ended ones. Then, combinations of dichotomous and polytomous models are employed concurrently. The results based on model comparisons revealed that the combination of the 3PL and the Graded Response Model produced the best fit statistics. © IEJEE.
dc.identifier.doi10.26822/iejee.2019553350
dc.identifier.endpage545en_US
dc.identifier.issn1307-9298
dc.identifier.issue5en_US
dc.identifier.scopusqualityQ3
dc.identifier.startpage539en_US
dc.identifier.urihttps://doi.org/10.26822/iejee.2019553350
dc.identifier.urihttps://hdl.handle.net/20.500.12868/746
dc.identifier.volume11en_US
dc.indekslendigikaynakScopus
dc.institutionauthorYılmaz, H.B.
dc.language.isoen
dc.publisherT&K Academic
dc.relation.ispartofInternational Electronic Journal of Elementary Education
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/openAccess
dc.subjectItem fit
dc.subjectItem response theory
dc.subjectMixed format tests
dc.subjectModel comparison
dc.titleA comparison of IRT model combinations for assessing fit in a mixed format elementary school science test
dc.typeArticle

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