correlation residuals

[Peter Taylor]

Hello,

 

 I am interested in obtaining correlation residuals (i.e., standardized covariance resiudals) for a CFA model using DWLS estimation for ordinal data, in order to get an idea of any posisble mispecification. Is it correct to use the resid(fit) command? I am assuming that as the input matrix is of correlations (polychoric) the residuals produced by resid(fit) will automatically be in correlational form. Is that right? Many thanks. Peter

[yrosseel]

As long as all your observed variables are categorical/ordered: yes.

Yves.

[Peter Taylor]

Great, thanks for confirming this

[Peter Taylor]

Hi, I've just run the same CFA model in both lavaan and Mplus (a 3 factor cfa with categorical indicators). The results are identical for the most part (same fit statistics, loadings, correlations, etc.). However, the correlation residuals I generate in lavaan through the resid(fit) command differ to those I obtain in mplus with the "output: residual" command. Any thoughts on why this might be or which set of residuals to go with? Many thanks.

 

Peter

 

On Thursday, 17 July 2014 09:16:10 UTC+1, Peter Taylor wrote:

Great, thanks for confirming this

[Edward Rigdon]

Is Sigma (the model-implied correlation matrix) the same for both?  If they differ, do both make sense?

--Ed Rigdon

Sent from my iPad

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[Peter Taylor]

Just had another look at this and noticed an error in what I was doing. Everything matches now including residuals! Thanks

 

Peter