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Direct linkTemplin, Jonathan L.; Henson, Robert A.; Templin, Sara E.; Roussos, Louis – Applied Psychological Measurement, 2008
Several types of parameterizations of attribute correlations in cognitive diagnosis models use the reduced reparameterized unified model. The general approach presumes an unconstrained correlation matrix with K(K - 1)/2 parameters, whereas the higher order approach postulates K parameters, imposing a unidimensional structure on the correlation…
Descriptors: Factor Structure, Identification, Correlation, Computation
