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NCME Instructional Module: Comparison of One-, Two-, and Three-Parameter IRT Models.
Peer reviewed Peer reviewed
Harris, Deborah – Educational Measurement: Issues and Practice, 1989
This instructional module discusses the one-, two-, and three-parameter logistic item response theory (IRT) models. Mathematical formulas are given for each model and they are compared, with figures illustrating the effects of changing parameters. A single data set is used to demonstrate the effects of changing parameter values. (SLD)
Descriptors: Comparative Analysis, Equations (Mathematics), Estimation (Mathematics), Instructional Materials
An NCME Instructional Module on Comparison of Classical Test Theory and Item Response Theory and Their Applications to Test Development.
Peer reviewed Peer reviewed
Hambleton, Ronald K.; Jones, Russell W. – Educational Measurement: Issues and Practice, 1993
This National Council on Measurement in Education (NCME) instructional module compares classical test theory and item response theory and describes their applications in test development. Related concepts, models, and methods are explored; and advantages and disadvantages of each framework are reviewed. (SLD)
Descriptors: Comparative Analysis, Educational Assessment, Graphs, Item Response Theory