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Simultaneous Linear Equating for Scenarios with Optional Test Versions or across Multiple Alternative Anchors
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Tom Benton – Practical Assessment, Research & Evaluation, 2025
This paper proposes an extension of linear equating that may be useful in one of two fairly common assessment scenarios. One is where different students have taken different combinations of test forms. This might occur, for example, where students have some free choice over the exam papers they take within a particular qualification. In this…
Descriptors: Equated Scores, Test Format, Test Items, Computation
Impacts of Differences in Group Abilities and Anchor Test Features on Three Non-IRT Test Equating Methods
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Inga Laukaityte; Marie Wiberg – Practical Assessment, Research & Evaluation, 2024
The overall aim was to examine effects of differences in group ability and features of the anchor test form on equating bias and the standard error of equating (SEE) using both real and simulated data. Chained kernel equating, Postratification kernel equating, and Circle-arc equating were studied. A college admissions test with four different…
Descriptors: Ability Grouping, Test Items, College Entrance Examinations, High Stakes Tests