Adaptive Testing With Regression Trees in the Presence of Multidimensionality

Duanli Yan, Charles Lewis and Martha Stocking

Journal of Educational and Behavioral Statistics, 2004, vol. 29, issue 3, 293-316

Abstract: It is unrealistic to suppose that standard item response theory (IRT) models will be appropriate for all the new and currently considered computer-based tests. In addition to developing new models, we also need to give attention to the possibility of constructing and analyzing new tests without the aid of strong models. Computerized adaptive testing currently relies heavily on IRT. Alternative, empirically based, nonparametric adaptive testing algorithms exist, but their properties are little known. This article introduces a nonparametric, tree-based algorithm for adaptive testing and shows that it may be superior to conventional, IRT-based adaptive testing in cases where the IRT assumptions are not satisfied. In particular, it shows that the tree-based approach clearly outperformed (one-dimensional) IRT when the pool was strongly two-dimensional.

Keywords: computerized adaptive testing; item response theory (IRT); regression tree (search for similar items in EconPapers)
Date: 2004
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Persistent link: https://EconPapers.repec.org/RePEc:sae:jedbes:v:29:y:2004:i:3:p:293-316

DOI: 10.3102/10769986029003293

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