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Download full textMorrison, Carol A.; Fitzpatrick, Steven J. – 1992
An attempt was made to determine which item response theory (IRT) equating method results in the least amount of equating error or "scale drift" when equating scores across one or more test forms. An internal anchor test design was employed with five different test forms, each consisting of 30 items, 10 in common with the base test and 5…
Descriptors: Comparative Analysis, Computer Simulation, Equated Scores, Error of Measurement
