How Often Do Subscores Have Added Value? Results from Operational and Simulated Data

Autor/in	Sinharay, Sandip
Titel	How Often Do Subscores Have Added Value? Results from Operational and Simulated Data
Quelle	In: Journal of Educational Measurement, 47 (2010) 2, S.150-174 (25 Seiten)Infoseite zur Zeitschrift PDF als Volltext Verfügbarkeit
Sprache	englisch
Dokumenttyp	gedruckt; online; Zeitschriftenaufsatz
ISSN	0022-0655
DOI	10.1111/j.1745-3984.2010.00106.x
Schlagwörter	Scores; Test Theory; Simulation; Reliability; Correlation; Data + Suchen Sie Ihr Suchwort? Testtheorie; Simulation program; Simulationsprogramm; Reliabilität; Korrelation; Daten
Abstract	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 value for several operational data sets. Following that I provide results from a detailed simulation study that examines what properties subscores should possess in order to have added value. The results indicate that subscores have to satisfy strict standards of reliability and correlation to have added value. A weighted average of the subscore and the total score was found to have added value more often. (As Provided).
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Erfasst von	ERIC (Education Resources Information Center), Washington, DC
Update	2017/4/10