ERIC Number: EJ929736
Record Type: Journal
Publication Date: 2011
Abstractor: As Provided
Reference Count: 26
Equating of Augmented Subscores
Sinharay, Sandip; Haberman, Shelby J.
Journal of Educational Measurement, v48 n2 p122-145 Sum 2011
Recently, there has been an increasing level of interest in subscores for their potential diagnostic value. Haberman (2008b) suggested reporting an augmented subscore that is a linear combination of a subscore and the total score. Sinharay and Haberman (2008) and Sinharay (2010) showed that augmented subscores often lead to more accurate diagnostic information than subscores. In order to report augmented subscores operationally, they should be comparable across the different forms of a test. One way to achieve comparability is to equate them. We suggest several methods for equating augmented subscores. Results from several operational and simulated data sets show that the error in the equating of augmented subscores appears to be small in most practical situations.
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Publication Type: Journal Articles; Reports - Descriptive
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