The Interaction Model

  • Shelby J. Haberman
Part of the Statistics for Social and Behavioral Sciences book series (SSBS)


The interaction model, a generalization of the Rasch model (RM) for binary responses, retains many of the attractive features of the RM but does not assume local independence. Like the RM, the interaction model has simple sufficient statistics and a relatively straightforward interpretation. Computation of conditional maximum-likelihood estimates is a task of comparable difficulty to the corresponding computation for the Rasch model.


Interaction Model Loglinear Model Local Independence Standard Normal Random Variable Ability Parameter 
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Copyright information

© Springer Science + Business Media, LLC 2007

Authors and Affiliations

  • Shelby J. Haberman
    • 1
  1. 1.Educational Testing ServicePrincetonUSA

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