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Direct linkLevy, Roy – Applied Psychological Measurement, 2010
SEMModComp, a software package for conducting likelihood ratio tests for mean and covariance structure modeling is described. The package is written in R and freely available for download or on request.
Descriptors: Structural Equation Models, Tests, Computer Software, Models
Kim, Doyoung; De Ayala, R. J.; Ferdous, Abdullah A.; Nering, Michael L. – Applied Psychological Measurement, 2011
To realize the benefits of item response theory (IRT), one must have model-data fit. One facet of a model-data fit investigation involves assessing the tenability of the conditional item independence (CII) assumption. In this Monte Carlo study, the comparative performance of 10 indices for identifying conditional item dependence is assessed. The…
Descriptors: Item Response Theory, Monte Carlo Methods, Error of Measurement, Statistical Analysis
Peer reviewedBentler, P. M.; Jamshidian, Mortaza – Applied Psychological Measurement, 1994
A general approach is proposed to avoid improper solutions in structural equation models. The constrained estimation approach presented, which is based on an adaptation of a globally convergent method for nonlinear programming, has worked well in all trials. (SLD)
Descriptors: Estimation (Mathematics), Statistical Analysis, Structural Equation Models
