Message/Author 

gibbon lab posted on Monday, December 12, 2011  5:14 pm



Hi Professor Muthen, I am running a two group analysis. For one of the paths, the beta is 1.71 with t=3.03 in one group and 4.30 with t=2.91 in the other group. The chisquare difference test shows that they are significantly different. In this case (lower beta with higher t value), which group should be considered to have a stronger path? Thanks a lot. 


Given that they are scaled the same, I think you could say that 4.30 is stronger because it is a larger value and both are significantly different from zero. 

gibbon lab posted on Tuesday, December 13, 2011  10:01 am



Hi Professor Muthen, That path has an exogenous latent variable and an endogenous latent variable. Can I assume the latent variables are scaled the same in both groups? Thanks a lot. 


You can if measurement invariance holds. 

gibbon lab posted on Wednesday, December 14, 2011  12:25 pm



Is there a command in Mplus to hold the measurement invariance? Thanks a lot. 


No. You would need to test for it. See the Topic 1 course handout under multiple group analysis. 

gibbon lab posted on Friday, April 06, 2012  1:46 pm



Hi Professor Muthen, What if the measurement invariance does not hold? Does that mean the comparison between the two groups is invalid? Thanks a lot. 


If measurement invariance does not hold, structural parameters cannot be compared across groups. 

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