Detection of Known Items in Adaptive Testing with a Statistical Quality Control Method

Wim J. J. Veerkamp and Cees A. W. Glas

Journal of Educational and Behavioral Statistics, 2000, vol. 25, issue 4, 373-389

Abstract: Due to previous exposure of items in adaptive testing, items may become known to a substantial portion of examinees. A disclosed item is bound to show drift in the item parameter values. In this paper it is suggested to use a statistical quality control method for the detection of known items. The method is worked out in detail for the 1-PL and 3-PL models. Adaptive test data are used to re-estimate the item parameters, and these estimates are used in a test of parameter drift. The method is illustrated in a number of simulation studies, including a power study.

Keywords: computer adaptive testing; CUSUM charts; differential item functioning; item response theory; parameter drift (search for similar items in EconPapers)
Date: 2000
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Persistent link: https://EconPapers.repec.org/RePEc:sae:jedbes:v:25:y:2000:i:4:p:373-389

DOI: 10.3102/10769986025004373

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