Hi,
I ran the saturated bivariate submodels to check whether the assumptions of equality of means and variance were met, and I noticed something quite interesting: although the submodels were significantly different from the saturated full model when I constrained the means across twins and zygosity, the submodel which constrained means and variances across twins and zygosity was not significantly different from the saturated full model. Are there any possible explanations for this? And can I still go ahead and run the bivariate cholesky models even though the equal means assumption is violated?
Thanks and best regards,
Yi