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ESEM example 5.27
Exploratory Factor Analysis
Daniel E Bontempo
posted on Wednesday, September 26, 2012 - 1:13 pm
In the user guide for example 5.27, it says
"fixing the factor variances at one in one group. For the other group, factor variances are free to be estimated."
But inspecting the tech1 output for the example shows no parameters in the PSI matrix for the 2nd group. And, the variances in the output are 1.0 for both groups.
Also, the 4th part of the example seeks to constrain variances across groups, but this seems to already be in place.
Am I misreading something? Are the 2nd group free variances expressed in some other parameter?
Linda K. Muthen
posted on Wednesday, September 26, 2012 - 4:08 pm
It is the part c output that estimates the model where factor variances are fixed to one in one group and are free in the other.
The equality in the fourth part of the example is on the factor covariance. The factor variances must be fixed at one in both groups here for model identification.
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