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Jodoin, Michael G.; Zenisky, April; Hambleton, Ronald K. – Applied Measurement in Education, 2006
Many credentialing agencies today are either administering their examinations by computer or are likely to be doing so in the coming years. Unfortunately, although several promising computer-based test designs are available, little is known about how well they function in examination settings. The goal of this study was to compare fixed-length…
Descriptors: Computers, Test Results, Psychometrics, Computer Simulation
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Custer, Michael; Omar, Md Hafidz; Pomplun, Mark – Applied Measurement in Education, 2006
This study compared vertical scaling results for the Rasch model from BILOG-MG and WINSTEPS. The item and ability parameters for the simulated vocabulary tests were scaled across 11 grades; kindergarten through 10th. Data were based on real data and were simulated under normal and skewed distribution assumptions. WINSTEPS and BILOG-MG were each…
Descriptors: Models, Scaling, Computer Software, Vocabulary