A Standardized Generalized Dimensionality Discrepancy Measure and a Standardized Model-Based Covariance for Dimensionality Assessment for Multidimensional Models

Autor/inn/en	Levy, Roy; Xu, Yuning; Yel, Nedim; Svetina, Dubravka
Titel	A Standardized Generalized Dimensionality Discrepancy Measure and a Standardized Model-Based Covariance for Dimensionality Assessment for Multidimensional Models
Quelle	In: Journal of Educational Measurement, 52 (2015) 2, S.144-158 (15 Seiten)Infoseite zur Zeitschrift PDF als Volltext Verfügbarkeit
Zusatzinformation	Weitere Informationen
Sprache	englisch
Dokumenttyp	gedruckt; online; Zeitschriftenaufsatz
ISSN	0022-0655
DOI	10.1111/jedm.12070
Schlagwörter	Item Response Theory; Models; Measurement Techniques; Correlation; Simulation; Factor Analysis + Suchen Sie Ihr Suchwort? Item-Response-Theorie; Analogiemodell; Messtechnik; Korrelation; Simulation program; Simulationsprogramm; Faktorenanalyse
Abstract	The standardized generalized dimensionality discrepancy measure and the standardized model-based covariance are introduced as tools to critique dimensionality assumptions in multidimensional item response models. These tools are grounded in a covariance theory perspective and associated connections between dimensionality and local independence. Relative to their precursors, they allow for dimensionality assessment in a more readily interpretable metric of correlations. A simulation study demonstrates the utility of the discrepancy measures' application at multiple levels of dimensionality analysis, and compares them to factor analytic and item response theoretic approaches. An example illustrates their use in practice. (As Provided).
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Erfasst von	ERIC (Education Resources Information Center), Washington, DC
Update	2020/1/01