Three Measures of Test Adaptation Based on Optimal Test Information
This study extends the work of Reckase, Zu, and Kim (2019) by introducing three new measures of test adaptation. These measures are based on the amount of information that the test provides to individual examinees and are designed to provide theoretical, engineering, and operational views of the amount of adaptation that a particular test provides. The three measures are applied to simulations of adaptive, multistage, and fixed-form tests to describe how the measures could be used in an operational setting to identify difficulties with adaptation and to suggest processes for improving adaptivity.
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