

EFA in version 7 versus Version 5 

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I ran a categorical EFA in version 7 at my previous institution using the WLSMV estimator and quartimin rotation. I had strong factor loadings and very good model fit for the four factor solution. However, I change institutions, and they only have mplus version 5 available. When I reran this in mplus version 5 on the same data and using the same code, I got the same factor loadings but now my model fit was not good at all (i.e., CFI went from .97 to .90....a very big change). I am very curious as to what changed between versions to cause this?? Also, would I have the same problem if I use classic FA estimators that aren't using polychoric correlations?? Any insight you could provide on this would be helpful. I will probably just buy the updated version but am interested to have an explanation, as I would think model fit calculations should not have changed. 


A new adjustment to chisquare was introduced in Version 6. It is asymptotically equivalent to the previous one but results in regular degrees of freedom. You can find the explanation in the Version 6 Technical Appendix Simple second order chisquare correction Only WLSMV is affected. 

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