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Quick Norms with Rasch Measurement.

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Bush, M. Joan; Schumacker, Randall E. – 1993

The feasibility of quick norms derived by the procedure described by B. D. Wright and M. H. Stone (1979) was investigated. Norming differences between traditionally calculated means and Rasch "quick" means were examined for simulated data sets of varying sample size, test length, and type of distribution. A 5 by 5 by 2 design with a…

Descriptors: Computer Simulation, Item Response Theory, Norm Referenced Tests, Sample Size

A Comparison of the Fit of Empirical Data to Two Latent Trait Models. Report No. 92.

Hutten, Leah R. – 1979

Goodness of fit of raw test score data were compared, using two latent trait models: the Rasch model and the Birnbaum three-parameter logistic model. Data were taken from various achievement tests and the Scholastic Aptitude Test (Verbal). A minimum sample size of 1,000 was required, and the minimum test length was 40 items. Results indicated that…

Descriptors: Ability Identification, Achievement Tests, College Entrance Examinations, Comparative Analysis