Compare original model to model with added loadings
Once you have a revised version of the theory-based model with added loadings, it's time to compare it to the original theory-based model. By adding loadings, you are actually saying that those items measure more than one construct, so you would want to carefully evaluate the additions' impacts on your theory. For this exercise, we'll conduct a likelihood ratio test, then compare the CFIs and RMSEAs.
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Factor Analysis in R
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# Conduct a likelihood ratio test
___(theory_CFA, theory_CFA_add)