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Use of Generalized Residuals to Examine Goodness of Fit of Item Response Models

Author(s):
Haberman, Shelby J.
Publication Year:
2009
Report Number:
RR-09-15
Source:
ETS Research Report
Document Type:
Report
Page Count:
17
Subject/Key Words:
Marginal Distributions, Normal Approximations, Contingency Tables, Conditional Estimation, Marginal Estimation, Rasch Model, Two-Parameter Logistic Model, Goodness of Fit

Abstract

Generalized residuals are a tool employed in the analysis of contingency tables to examine goodness of fit. They may be applied to item response models with little complication. Their use is illustrated with testing data from operational programs. Models considered include the Rasch model and the two-parameter logistic model.

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