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Multidimensional CAT Item Selection Methods for Domain Scores and Composite Scores: Theory and Applications
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Yao, Lihua – Psychometrika, 2012
Multidimensional computer adaptive testing (MCAT) can provide higher precision and reliability or reduce test length when compared with unidimensional CAT or with the paper-and-pencil test. This study compared five item selection procedures in the MCAT framework for both domain scores and overall scores through simulation by varying the structure…
Descriptors: Item Banks, Test Length, Simulation, Adaptive Testing
Reliability of Multiple Classifications.
Peer reviewed Peer reviewed
Huynh, Huynh – Psychometrika, 1978
The use of Cohen's kappa index as a measure of the reliability of multiple classifications is developed. Special cases of the index as well as the effects of test length on the index are also explored. (JKS)
Descriptors: Career Development, Classification, Mastery Tests, Test Length
A Simple Proof of the Spearman-Brown Formula for Continuous Test Lengths
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Allison, Paul A. – Psychometrika, 1976
A direct proof is given for the generalized Spearman-Brown formula for any real multiple of test length. (Author)
Descriptors: Correlation, Error of Measurement, Raw Scores, Test Length
On the Theory of a Set of Tests Which Differ Only in Length
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Kristof, Walter – Psychometrika, 1971
Descriptors: Cognitive Measurement, Error of Measurement, Mathematical Models, Psychological Testing