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Direct linkSinharay, Sandip – Journal of Educational Measurement, 2010
Recently, there has been an increasing level of interest in subscores for their potential diagnostic value. Haberman suggested a method based on classical test theory to determine whether subscores have added value over total scores. In this article I first provide a rich collection of results regarding when subscores were found to have added…
Descriptors: Scores, Test Theory, Simulation, Reliability
