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Differential Item Functioning in Multiple Choice Items. Project Psychometric Aspects of Item Banking No. 47. Research Report 90-1.
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Westers, Paul; Kelderman, Henk – 1990
In multiple-choice items the response probability on an item may be viewed as the result of two distinct latent processes--a cognitive process to solve the problem, and another random process that leads to the choice of a certain alternative (the process of giving the actual response). An incomplete latent class model is formulated that describes…
Descriptors: Cognitive Processes, Estimation (Mathematics), Foreign Countries, Guessing (Tests)