Using response times to detect aberrant responses in computerized adaptive testing

Willem J. van der Linden (Corresponding Author), Edith van Krimpen-Stoop

Research output: Contribution to journalArticleAcademic

76 Citations (Scopus)
1 Downloads (Pure)


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.
Original languageEnglish
Pages (from-to)251-266
Issue number2
Publication statusPublished - 2003


  • Aberrant response patterns
  • Computerized Adaptive Testing
  • Posterior predictive checks
  • Person misfit
  • Response times
  • Residual analysis


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