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| Psychometrika | 1 |
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| Luecht, Richard M. | 2 |
| van der Linden, Wim J. | 2 |
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Peer reviewedvan der Linden, Wim J.; Luecht, Richard M. – Psychometrika, 1998
Derives a set of linear conditions of item-response functions that guarantees identical observed-score distributions on two test forms. The conditions can be added as constraints to a linear programming model for test assembly. An example illustrates the use of the model for an item pool from the Law School Admissions Test (LSAT). (SLD)
Descriptors: Equated Scores, Item Banks, Item Response Theory, Linear Programming
An Optimization Model for Test Assembly To Match Observed-Score Distributions. Research Report 94-7.
Download full textvan der Linden, Wim J.; Luecht, Richard M. – 1994
An optimization model is presented that allows test assemblers to control the shape of the observed-score distribution on a test for a population with a known ability distribution. An obvious application is for item response theory-based test assembly in programs where observed scores are reported and operational test forms are required to produce…
Descriptors: Ability, Foreign Countries, Heuristics, Item Response Theory
