For decades, researchers and practitioners have made a great deal of effort to study a variety of methods to increase parameter accuracy, but only recently can researchers start focusing on improving parameter estimations by using a joint model that could incorporate RT and students information as CI. Given that many tests are currently…

This study examined the time different ability level examinees spend taking a CAT on demanding items to these examinees. It was also found that high able examinees spend more time on the pretest items, which are not tailored to the examinees' ability level, than do lower ability examinees. Higher able examinees showed persistence with test…

When low-stakes assessments are administered to examinees, the degree to which examinees give their best effort is often unclear, complicating the validity and interpretation of the resulting test scores. This study introduces a new method for measuring examinee test-taking effort on computer-based test items based on item response time. This…

This study examines the effect of item response time across 30 items on ability estimates in a high stakes computer adaptive graduate admissions examination. Examinees were categorized according to 4 item response time patterns, and the categories are compared in terms of ability estimates. Significant differences between response time patterns…

There are a variety of situations in which low-stakes achievement tests--which are defined as those having few or no consequences for examinee performance--are used in applied measurement. A problem inherent in such testing is that we often cannot assume that all examinees give their best effort to their test, which suggests that the test scores…