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Hasibe Yahsi Sari; Hulya Kelecioglu – International Journal of Assessment Tools in Education, 2025
The aim of the study is to examine the effect of polytomous item ratio on ability estimation in different conditions in multistage tests (MST) using mixed tests. The study is simulation-based research. In the PISA 2018 application, the ability parameters of the individuals and the item pool were created by using the item parameters estimated from…
Descriptors: Test Items, Test Format, Accuracy, Test Length
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Xiuxiu Tang; Yi Zheng; Tong Wu; Kit-Tai Hau; Hua-Hua Chang – Journal of Educational Measurement, 2025
Multistage adaptive testing (MST) has been recently adopted for international large-scale assessments such as Programme for International Student Assessment (PISA). MST offers improved measurement efficiency over traditional nonadaptive tests and improved practical convenience over single-item-adaptive computerized adaptive testing (CAT). As a…
Descriptors: Reaction Time, Test Items, Achievement Tests, Foreign Countries
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Mehmet Fatih Doguyurt; Seref Tan – International Journal of Assessment Tools in Education, 2025
This study investigates the impact of violating the local item independence assumption by loading certain items onto a second dimension on test equating errors in unidimensional and dichotomous tests. The research was designed as a simulation study, using data generated based on the PISA 2018 mathematics exam. Analyses were conducted under 36…
Descriptors: Equated Scores, Test Items, Mathematics Tests, International Assessment