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Item Response Theory2
Matrices2
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Applied Measurement in…1
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Gessaroli, Marc E.2
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Assessing the Dimensionality of Item Response Matrices with Small Sample Sizes and Short Test Lengths.
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De Champlain, Andre; Gessaroli, Marc E. – Applied Measurement in Education, 1998
Type I error rates and rejection rates for three-dimensionality assessment procedures were studied with data sets simulated to reflect short tests and small samples. Results show that the G-squared difference test (D. Bock, R. Gibbons, and E. Muraki, 1988) suffered from a severely inflated Type I error rate at all conditions simulated. (SLD)
Descriptors: Item Response Theory, Matrices, Sample Size, Simulation
Assessing the Dimensionality of Item Response Matrices with Small Sample Sizes and Short Test Lengths.
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De Champlain, Andre; Gessaroli, Marc E. – 1996
The use of indices and statistics based on nonlinear factor analysis (NLFA) has become increasingly popular as a means of assessing the dimensionality of an item response matrix. Although the indices and statistics currently available to the practitioner have been shown to be useful and accurate in many testing situations, few studies have…
Descriptors: Adaptive Testing, Chi Square, Computer Assisted Testing, Factor Analysis