Abstract
Response time (RT) has been demonstrated to be effective in identifying compromised items and test takers with item preknowledge. This study compared the performance of the effective response time (ERT) approach and the residual based on the lognormal response time model (RES) approach in detecting the examinees with item preknowledge using item response time in a linear test. Three factors were considered in this study: the percentage of examinees with item preknowledge, the percentage of breached items, and the percent decrease of response time of the breached items. The results suggest that the RES approach not only controls the Type I error rate below 0.05 for all investigated conditions, but also flag the examinees with item preknowledge sensitively.
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