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ERIC Number: EJ133676
Record Type: Journal
Publication Date: 1975
Pages: N/A
Abstractor: N/A
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A Test Theory Model for Ordinal Measurements
Schulman, Robert S.; Haden, Richard L.
Psychometrika, 40, 4, 455-72, Dec 75
A model is proposed for the description of ordinal test scores based on the definition of true score as expected rank; its deviations are compared with results from classical test theory. An unbiased estimator of population true score from sample data is calculated. Score variance and population reliability are examined. (Author/BJG)
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