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Item Response Theory2
Computer Assisted Testing1
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Reaction Time1
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Psychometrika2
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Cohen, Allan S.1
De Boeck, Paul1
Goegebeur, Yuri1
Wang, Tianyou1
Wollack, James A.1
Zhang, Jiawei1
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A Speeded Item Response Model with Gradual Process Change
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Goegebeur, Yuri; De Boeck, Paul; Wollack, James A.; Cohen, Allan S. – Psychometrika, 2008
An item response theory model for dealing with test speededness is proposed. The model consists of two random processes, a problem solving process and a random guessing process, with the random guessing gradually taking over from the problem solving process. The involved change point and change rate are considered random parameters in order to…
Descriptors: Problem Solving, Item Response Theory, Models, Case Studies
Optimal Partitioning of Testing Time: Theoretical Properties and Practical Implications
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Wang, Tianyou; Zhang, Jiawei – Psychometrika, 2006
This paper deals with optimal partitioning of limited testing time in order to achieve maximum total test score. Nonlinear optimization theory was used to analyze this problem. A general case using a generic item response model is first presented. A special case that applies a response time model proposed by Wang and Hanson (2005) is also…
Descriptors: Reaction Time, Testing, Scores, Item Response Theory