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MPlus estimating unrequested paths?
Structural Equation Modeling
posted on Monday, June 25, 2012 - 1:21 pm
I have noticed from time to time that MPlus will estimate a path that is not requested. Typically, it will correlate two variables. For instance, in the model:
med on X1 X2;
Y1 on med;
Y2 on med;
In this example, Mplus is correlating Y1 and Y2. Has this happened to anyone else? Is there a reason this is happening or am I doing something wrong?
I can solve the issue by specifying:
Still, it has me wondering whether I am missing some code somewhere.
Linda K. Muthen
posted on Monday, June 25, 2012 - 2:59 pm
Mplus has various defaults all of which can be overridden. If you don't want this residual covariance, you can fix it to zero as you have done.
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