I am not sure if this topic has been covered elsewhere in this forum. How to incorporate age as continuous var into the twin univariate model and calculating the significance of age along with components of A,C ,E and testing the deterioration in model fit after each component is dropped from the full model.
It would be helpful if there any example scripts available to follow.
Thanks in advance.
Sabha
I think so, in this thread... http://openmx.psyc.virginia.edu/thread/554
Searching this site for terms like: age twin covariate will find such things quite efficiently (unlike many sites equipped with such features).