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Feldt, Leonard S.; Kim, Seonghoon – Educational and Psychological Measurement, 2006
Researchers sometimes need a statistical test of the hypothesis that two values of Cronbach's alpha reliability coefficient are equal. The situation may involve scores from two different measures administered to independent random samples or from the same measure administered to random samples from two different populations. Feldt derived a test…
Descriptors: Individual Testing, Test Items, Sample Size, Scores
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Tinsley, Howard E. A.; Dawis, Rene V. – Applied Psychological Measurement, 1977
This research investigated the use of the Rasch simple logistic model in obtaining test-free ability estimates. Raw-score ability estimates were influenced by the difficulty of the items used in measurement but Rasch ability estimates were relatively independent of the item difficulty. (Author/CTM)
Descriptors: Equated Scores, Higher Education, Individual Testing, Item Analysis
Weiss, David J., Ed. – 1985
This report contains the Proceedings of the 1982 Item Response Theory and Computerized Adaptive Testing Conference. The papers and their discussions are organized into eight sessions: (1) "Developments in Latent Trait Theory," with papers by Fumiko Samejima and Michael V. Levine; (2) "Parameter Estimation," with papers by…
Descriptors: Achievement Tests, Adaptive Testing, Branching, Computer Assisted Testing