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Direct linkHe, Yong – ProQuest LLC, 2013
Common test items play an important role in equating multiple test forms under the common-item nonequivalent groups design. Inconsistent item parameter estimates among common items can lead to large bias in equated scores for IRT true score equating. Current methods extensively focus on detection and elimination of outlying common items, which…
Descriptors: Test Items, Regression (Statistics), Simulation, Comparative Analysis
