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Mplus Discussion > Structural Equation Modeling >
 Stéphanie Baggio posted on Wednesday, April 29, 2015 - 5:23 am

I am trying to compute an autoregressive model incorporating fixed effects and reciprocal paths between time dynamic components of two variables.
I runned the model for three-waves data, but the model with two-waves data returned an error message (degrees of freedom negative, model not identified).
I wonder whether it was possible to compute such a model with only two waves?
The model is:

X BY x1@1 x2@1;
Y BY y1@1 y2@1;
x2 ON x1;
y2 ON y1;
x1 WITH y1;
y2 ON x2;
x2 ON y2;

Thank you,
 Linda K. Muthen posted on Wednesday, April 29, 2015 - 9:24 am
This model is not identified with two time points.
 Stéphanie Baggio posted on Thursday, April 30, 2015 - 5:09 am
This is the answer I expected. Thank you.
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