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Gierl, Mark J.; Bisanz, Jeffrey; Bisanz, Gay L.; Boughton, Keith A.; Khaliq, Shameem Nyla – Educational Measurement: Issues and Practice, 2001
Describes some recent advances in the study of differential group performance and illustrates some of the ways that substantive analyses can be integrated with multidimensional, bundles-based statistical methods using test specifications to organize the analyses. Highlights some future directions for the analysis of differential item functioning.…
Descriptors: Achievement Tests, Item Bias, Statistical Analysis

Yen, Wendy M. – Educational Measurement: Issues and Practice, 1997
The accuracy of statistics based on performance assessments that represent percentages of students reaching standards is explored using data from a large-scale performance assessment, the Maryland School Performance Assessment Program. Results with students in grades 3, 5, and 8 support the accuracy of pooling results to produce the statistics.…
Descriptors: Achievement Tests, Elementary Education, Error of Measurement, Performance Based Assessment