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Moses, Tim; Liu, Jinghua; Tan, Adele; Deng, Weiling; Dorans, Neil J. – ETS Research Report Series, 2013
In this study, differential item functioning (DIF) methods utilizing 14 different matching variables were applied to assess DIF in the constructed-response (CR) items from 6 forms of 3 mixed-format tests. Results suggested that the methods might produce distinct patterns of DIF results for different tests and testing programs, in that the DIF…
Descriptors: Test Construction, Multiple Choice Tests, Test Items, Item Analysis
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Moses, Tim; Yang, Wen-Ling; Wilson, Christine – Journal of Educational Measurement, 2007
This study explored the use of kernel equating for integrating and extending two procedures proposed for assessing item order effects in test forms that have been administered to randomly equivalent groups. When these procedures are used together, they can provide complementary information about the extent to which item order effects impact test…
Descriptors: Advanced Placement, Equated Scores, Test Items, Item Analysis