Assessing the Dimensionality of Simulated LSAT Item Response Matrices with Small Sample Sizes and Short Test Lengths. Law School Admission Council Computerized Testing Report. LSAC Research Report Series.

Autor/in	De Champlain, Andre F.
Institution	Law School Admission Council, Princeton, NJ.
Titel	Assessing the Dimensionality of Simulated LSAT Item Response Matrices with Small Sample Sizes and Short Test Lengths. Law School Admission Council Computerized Testing Report. LSAC Research Report Series.
Quelle	(1999), (20 Seiten) PDF als Volltext kostenfreie Datei Verfügbarkeit
Sprache	englisch
Dokumenttyp	gedruckt; online; Monographie
Schlagwörter	Admission (School); College Entrance Examinations; Item Response Theory; Law Schools; Matrices; Sample Size; Simulation; Test Length; Law School Admission Test + Suchen Sie Ihr Suchwort? Aufnahmeprüfung; Item-Response-Theorie; Matrizenrechnung; Simulation program; Simulationsprogramm; Law school; Assessment; Admission criteria; Admission procedures; Rechtswissenschaft; Fachbereich; Eignungsprüfung; Eignungstest; Hochschulzulassung
Abstract	The purpose of this study was to examine empirical Type I error rates and rejection rates for three dimensionality assessment procedures with data sets simulated to reflect short tests and small samples. The TESTFACT G superscript 2 difference test suffered from an inflated Type I error rate with unidimensional data sets, while the approximate chi squared statistic based on a NOHARM analysis did not. Rejection rates with simulated two-dimensional data sets were high for both procedures. The behavior of the G superscript 2 difference test was highly influenced by the independent variables manipulated, which was not the case for the approximate chi squared statistic. The implications of these results for small volume administrations are discussed. (Contains 5 tables and 70 references.) (Author/SLD)
Erfasst von	ERIC (Education Resources Information Center), Washington, DC