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Saatcioglu, Fatima Munevver; Sen, Sedat – International Journal of Testing, 2023
In this study, we illustrated an application of the confirmatory mixture IRT model for multidimensional tests. We aimed to examine the differences in student performance by domains with a confirmatory mixture IRT modeling approach. A three-dimensional and three-class model was analyzed by assuming content domains as dimensions and cognitive…
Descriptors: Item Response Theory, Foreign Countries, Elementary Secondary Education, Achievement Tests
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Bulut, Hatice Cigdem; Bulut, Okan; Arikan, Serkan – International Journal of Testing, 2023
This study examined group differences in online reading comprehension (ORC) using student data from the 2016 administration of the Progress in International Reading Literacy Study (ePIRLS). An explanatory item response modeling approach was used to explore the effects of item properties (i.e., item format, text complexity, and cognitive…
Descriptors: International Assessment, Achievement Tests, Grade 4, Foreign Countries