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Psychometrics2
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Educational Measurement:…2
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Kolen, Michael J.2
Lee, Won-Chan1
Tong, Ye1
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Psychometric Properties of IRT Proficiency Estimates
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Kolen, Michael J.; Tong, Ye – Educational Measurement: Issues and Practice, 2010
Psychometric properties of item response theory proficiency estimates are considered in this paper. Proficiency estimators based on summed scores and pattern scores include non-Bayes maximum likelihood and test characteristic curve estimators and Bayesian estimators. The psychometric properties investigated include reliability, conditional…
Descriptors: Test Length, Psychometrics, Item Response Theory, Scores
Psychometric Properties of Raw and Scale Scores on Mixed-Format Tests
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Kolen, Michael J.; Lee, Won-Chan – Educational Measurement: Issues and Practice, 2011
This paper illustrates that the psychometric properties of scores and scales that are used with mixed-format educational tests can impact the use and interpretation of the scores that are reported to examinees. Psychometric properties that include reliability and conditional standard errors of measurement are considered in this paper. The focus is…
Descriptors: Test Use, Test Format, Error of Measurement, Raw Scores