Model Fit in theta parametrization & ... PreviousNext
Mplus Discussion > Structural Equation Modeling >
 ClaudiaBergomi posted on Friday, October 29, 2010 - 6:58 am

I am testing a mediation model with two latent continuous predictors, one latent continuous mediator and one manifest dichotomous dependent variable. The default estimator for this type of analysis is a robust WLS.

The problem is that I do not get any of the usual Fit Indices but only the WRMW (Weighted Root Mean Square Residual) which is equal to 0.388.

As I was looking for some more information regarding this index I found the mplus discussion "Weighted Root Mean Square Residual" with the following posts:

bmuthen posted on Saturday, October 08, 2005 - 2:02 pm
(...) A value less than 1 is generally good, (...)
Linda K. Muthen posted on Friday, April 04, 2008 - 3:04 pm
I would not worry about WMRMR. It is not a well-studied fit statistic and has not behaved as well as expected.

So that now I am even more confused. How can I evaluate the goodness of my model? Is there some way to get good fit indices with a binary dependent variable?

Many thanks in advance,
 Linda K. Muthen posted on Friday, October 29, 2010 - 7:14 am
There must be more to the story. Please send your output and license number to so I can see what it is.
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