TY - JOUR T1 - Using response times to detect aberrant responses in computerized adaptive testing JF - Psychometrika Y1 - 2003 A1 - van der Linden, W. J. A1 - van Krimpen-Stoop, E. M. L. A. KW - Adaptive Testing KW - Behavior KW - Computer Assisted Testing KW - computerized adaptive testing KW - Models KW - person Fit KW - Prediction KW - Reaction Time AB - 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. VL - 68 ER -