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Journal of Educational…1
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Wainer, Howard2
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Some Empirical Guidelines for Building Testlets. Program Statistics Research Technical Report No. 91-14.
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Wainer, Howard; And Others – 1991
A series of computer simulations was run to measure the relationship between testlet validity and the factors of item pool size and testlet length for both adaptive and linearly constructed testlets. Results confirmed the generality of earlier empirical findings of H. Wainer and others (1991) that making a testlet adaptive yields only marginal…
Descriptors: Adaptive Testing, Computer Assisted Testing, Computer Simulation, Item Banks
A Comparison of the Performance of Simulated Hierarchical and Linear Testlets.
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Wainer, Howard; And Others – Journal of Educational Measurement, 1992
Computer simulations were run to measure the relationship between testlet validity and factors of item pool size and testlet length for both adaptive and linearly constructed testlets. Making a testlet adaptive yields only modest increases in aggregate validity because of the peakedness of the typical proficiency distribution. (Author/SLD)
Descriptors: Adaptive Testing, Comparative Testing, Computer Assisted Testing, Computer Simulation