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Hi all,
I am conducting simulation studies of LGC, and I found that the improper solution rates were pretty high in my model (If a solution with any variance of growth factor less than 0 or any correlation out of [-1, 1], I defined it as improper. Attached is the number of improper solutions out of 1000 replications). I am wondering when specifying an LGC in OpenMx, should I add constraints on variance or correlations? Or I can just exclude those improper solutions from simulation studies simply?
Thanks in advance!