Significance Testing of Variance Comp... PreviousNext
Mplus Discussion > Growth Modeling of Longitudinal Data >
 Igor Himelfarb posted on Wednesday, August 07, 2013 - 8:02 pm

What distribution does Mplus use to test the significance of the variance of the latent slopes and interceptn in growth models?


 Bengt O. Muthen posted on Wednesday, August 07, 2013 - 8:36 pm
What's printed in the output for a single variance is simply the ratio of estimate to SE and the p-value is computed assuming that this has a normal distribution; this is the standard output. It is well known that this is not a great way to test variances.
 Igor Himelfarb posted on Wednesday, August 07, 2013 - 10:46 pm
Thanks for the response. Any suggestions for a more sophisticated way to test the variances in Mplus?

 Bengt O. Muthen posted on Thursday, August 08, 2013 - 9:02 pm
There are interesting references on this, but new methods have not yet been implemented in Mplus. See, e.g., the 2004 JRSS-B article by Crainiceanu-Ruppert and the 2001 Berkhof-Snijders article in JEBS.
 Igor Himelfarb posted on Friday, August 09, 2013 - 5:59 pm
Thanks a lot for the references!
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