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A Probabilistic IRT Model for Unfolding Preference Data.
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Andrich, David – Applied Psychological Measurement, 1989
A probabilistic item response theory (IRT) model is developed for pair-comparison design in which the unfolding principle governing the choice process uses a discriminant process analogous to Thurstone's Law of Comparative Judgment. A simulation study demonstrates the feasibility of estimation, and two examples illustrate the implications for…
Descriptors: Algorithms, Computer Simulation, Discrimination Learning, Equations (Mathematics)