Bayesian item selection criteria for adaptive testing

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Linden van der, Wim J. (1998) Bayesian item selection criteria for adaptive testing. Psychometrika, 63 (2). pp. 201-216. ISSN 0033-3123

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Abstract:Owen (1975) proposed an approximate empirical Bayes procedure for item selection in computerized adaptive testing (CAT). The procedure replaces the true posterior by a normal approximation with closed-form expressions for its first two moments. This approximation was necessary to minimize the computational complexity involved in a fully Bayesian approach but is no longer necessary given the computational power currently available for adaptive testing. This paper suggests several item selection criteria for adaptive testing which are all based on the use of the true posterior. Some of the statistical properties of the ability estimator produced by these criteria are discussed and empirically characterized.
Item Type:Article
Copyright:© 1998 The Psychometric Society
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Behavioural Sciences (BS)
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Link to this item:http://purl.utwente.nl/publications/60232
Official URL:http://dx.doi.org/10.1007/BF02294775
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