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An Investigation of Classification Consistency Indexes Estimated under Alternative Strong True Score Models.
Peer reviewed Peer reviewed
Hanson, Bradley A.; Brennan, Robert L. – Journal of Educational Measurement, 1990
Using several data sets, the relative performance of the beta binomial model and two more general strong true score models in estimating several indices of classification consistency is examined. It appears that the beta binomial model can provide inadequate fits to raw score distributions compared to more general models. (TJH)
Descriptors: Classification, Comparative Analysis, Equations (Mathematics), Estimation (Mathematics)
Estimation of Classification Consistency When the Probability of a Correct Response Varies.
Peer reviewed Peer reviewed
Spray, Judith A.; Welch, Catherine J. – Journal of Educational Measurement, 1990
The effect of large, within-examinee item difficulty variability on estimates of the proportion of consistent classification of examinees into mastery categories was studied over 2 test administrations for 100 simulated examinees. The proportion of consistent classifications was adequately estimated using the technique proposed by M. Subkoviak…
Descriptors: Classification, Difficulty Level, Estimation (Mathematics), Item Response Theory