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Scoring Subscales Using Multidimensional Item Response Theory Models
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DeMars, Christine E. – Online Submission, 2005
Several methods for estimating item response theory scores for multiple subtests were compared. These methods included two multidimensional item response theory models: a bi-factor model where each subtest was a composite score based on the primary trait measured by the set of tests and a secondary trait measured by the individual subtest, and a…
Descriptors: Item Response Theory, Multidimensional Scaling, Correlation, Scoring Rubrics