Notice: On April 23, 2014, Statalist moved from an email list to a forum, based at statalist.org.
From | Jacob Felson <felsonj@gmail.com> |
To | statalist@hsphsun2.harvard.edu |
Subject | st: Problems fitting twin data (ACE model) with sem command |
Date | Sat, 9 Mar 2013 15:44:01 -0500 |
I'm wondering if it is possible to estimate a basic ACE (classic twin model) using the sem command. I think such a model would require either that error terms be dropped. It doesn't seem possible to drop the error terms for endogenous variables in sem. Is there a workaround? When I tried to fit such a model, Stata immediately produced an error: the model was unidentified; too many latent variables. Jacob Felson -- Jacob Felson * * For searches and help try: * http://www.stata.com/help.cgi?search * http://www.stata.com/support/faqs/resources/statalist-faq/ * http://www.ats.ucla.edu/stat/stata/