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Direct linkTuerlinckx, Francis; De Boeck, Paul – Psychometrika, 2005
In this paper we propose two interpretations for the discrimination parameter in the two-parameter logistic model (2PLM). The interpretations are based on the relation between the 2PLM and two stochastic models. In the first interpretation, the 2PLM is linked to a diffusion model so that the probability of absorption equals the 2PLM. The…
Descriptors: Item Response Theory, Models, Reaction Time, Item Analysis
