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Mplus Discussion > Exploratory Factor Analysis >
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 cathy labrish posted on Monday, December 12, 2011 - 8:36 pm
Hello,

If this is a repeat post, please forgive me but I do not see a message I posted last Friday.

In addition to checking scree plots, and performing parallel analyses to determine number of factors to extract, I also check various fit indices. When using WLSMV, I use the RMSEA, CFI, TLI, chi-square and SRMR fit stats.

There are times when I might try a ULS estimator. To my knowledge, no other package except CEFA produces RMSEA or chi-square when using ULS. I note that ULSMV produces all the fit stats produced when using WLSMV.

I have checked the technical appendices. Except for a description of how ULSMV computes df, I can find no other reference to how ULSMV works. Aside from the calculation of df, are there any differences between ULSMV and ULS that I should take note of, or should the two provide identical results.

Thank you!
 Linda K. Muthen posted on Tuesday, December 13, 2011 - 9:50 am
ULS and ULSMV will give the same parameter estimates. ULS does not give standard errors or fit statistics. Only ULSMV does that.
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