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Direct linkShin, Seon-Hi – Practical Assessment, Research & Evaluation, 2009
This study investigated the impact of the coding scheme on IRT-based true score equating under a common-item nonequivalent groups design. Two different coding schemes under investigation were carried out by assigning either a zero or a blank to a missing item response in the equating data. The investigation involved a comparison study using actual…
Descriptors: True Scores, Equated Scores, Item Response Theory, Coding
