Dear OpenMx experts,
May I ask what's the difference between multi-variate ACE models based on paths (Cholesky decomposition) and models based on variance, such as advantages and disadvantages of the two methods? I was told that the models based on variance and covariance will not suffer from the type I error issues, by compared to the Cholesky decomposition, why? Will the variance-based multi-variate ACE models better than the Cholesky decomposition-based models? Could I model a multi-variate ACE model based on variance in OpenMx? Any demo codes would be appreciated.
Thanks and best wishes,
Zhi