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The Impact of Unmodeled Error Covariance on Measurement Models in Structural Equation Modeling
Subject responses to observed variables are affected by both the underlying construct(s) of interest as well as the observed variables’ measurement error. In practice, method effects can cause some observed variables to share error, violating the assumption of linear independence if the error covariance is not directly modeled. ...
Determining and Testing an Alternative Model for the Evaluation of Responses to a Standardized Test of Mathematics
State standardized tests of mathematics are generally organized around a set of learning objectives set forth by the state or some other body. Items are sampled from these learning objectives and student reports are often partially based on the number of items within each objective(s) answered correctly. This paper sets forth ...