A Procedure for Dimensionality Analyses of Response Data from Various Test Designs

Autor/in	Zhang, Jinming
Titel	A Procedure for Dimensionality Analyses of Response Data from Various Test Designs
Quelle	In: Psychometrika, 78 (2013) 1, S.37-58 (22 Seiten) PDF als Volltext Verfügbarkeit
Sprache	englisch
Dokumenttyp	gedruckt; online; Zeitschriftenaufsatz
ISSN	0033-3123
DOI	10.1007/s11336-012-9287-z
Schlagwörter	Adaptive Testing; Simulation; Computer Assisted Testing; Test Reliability; Item Response Theory; Psychometrics; Test Items; Measurement Techniques; Test Construction; Data Analysis + Suchen Sie Ihr Suchwort? Simulation program; Simulationsprogramm; Testreliabilität; Item-Response-Theorie; Psychometry; Psychometrie; Test content; Testaufgabe; Messtechnik; Testaufbau; Auswertung
Abstract	In some popular test designs (including computerized adaptive testing and multistage testing), many item pairs are not administered to any test takers, which may result in some complications during dimensionality analyses. In this paper, a modified DETECT index is proposed in order to perform dimensionality analyses for response data from such designs. It is proven in this paper that under certain conditions, the modified DETECT can successfully find the dimensionality-based partition of items. Furthermore, the modified DETECT index is decomposed into two parts, which can serve as indices of the reliability of results from the DETECT procedure when response data are judged to be multidimensional. A simulation study shows that the modified DETECT can successfully recover the dimensional structure of response data under reasonable specifications. Finally, the modified DETECT procedure is applied to real response data from two-stage tests to demonstrate how to utilize these indices and interpret their values in dimensionality analyses. (As Provided).
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Update	2017/4/10