Using response times to detect aberrant responses in computerized adaptive testing

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Linden van der, Wim J. and Krimpen-Stoop van, Edith M.L.A. (2003) Using response times to detect aberrant responses in computerized adaptive testing. Psychometrika, 68 (2). pp. 251-265. ISSN 0033-3123

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Abstract:A lognormal model for response times is used to check response times for aberrances in examinee behavior on computerized adaptive tests. Both classical procedures and Bayesian posterior predictive checks are presented. For a fixed examinee, responses and response times are independent; checks based on response times offer thus information independent of the results of checks on response patterns. Empirical examples of the use of classical and Bayesian checks for detecting two different types of aberrances in response times are presented. The detection rates for the Bayesian checks outperformed those for the classical checks, but at the cost of higher false-alarm rates. A guideline for the choice between the two types of checks is offered.
Item Type:Article
Copyright:© 2003 The Psychometric Society
Faculty:
Behavioural Sciences (BS)
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Link to this item:http://purl.utwente.nl/publications/60240
Official URL:http://dx.doi.org/10.1007/BF02294800
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