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Item Response Theory2
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Applied Psychological…2
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Drasgow, Fritz1
Due, Allan M.1
Reise, Steven P.1
Stark, Stephen1
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An EM Approach to Parameter Estimation for the Zinnes and Griggs Paired Comparison IRT Model.
Peer reviewed Peer reviewed
Stark, Stephen; Drasgow, Fritz – Applied Psychological Measurement, 2002
Describes item response and information functions for the Zinnes and Griggs paired comparison item response theory (IRT) model (1974) and presents procedures for estimating stimulus and person parameters. Monte Carlo simulations show that at least 400 ratings are required to obtain reasonably accurate estimates of the stimulus parameters and their…
Descriptors: Comparative Analysis, Computer Simulation, Error of Measurement, Item Response Theory
The Influence of Test Characteristics on the Detection of Aberrant Response Patterns.
Peer reviewed Peer reviewed
Reise, Steven P.; Due, Allan M. – Applied Psychological Measurement, 1991
Previous person-fit research is extended through explication of an unexplored model for generating aberrant response patterns. The proposed model is then implemented to investigate the influence of test properties on the aberrancy detection power of a person-fit statistic. Difficulties of aberrancy detection are discussed. (SLD)
Descriptors: Algorithms, Computer Simulation, Item Response Theory, Mathematical Models