Published on *OpenMx* (http://openmx.psyc.virginia.edu)

By *svrieze*

Created *09/02/2010 - 16:22*

Thu, 09/02/2010 - 16:22 — svrieze [1]

Hello,

How do I specify the intercept and slope means for a growth curve, using an ACE parameterization.

I can follow the RAM notation for growth curves in the documentation, but I'm not sure how to specify the intercept and slope means outside of the RAM framework.

Maybe another way to ask the question is as such: In the ACE factor model examples (common pathway model) the factor means are fixed at zero. How can I change the code to estimate the factor mean?

Thanks,

Scott

**Links:**

[1] http://openmx.psyc.virginia.edu/users/svrieze

[2] http://openmx.psyc.virginia.edu/thread/660

[3] http://openmx.psyc.virginia.edu/thread/651

[4] http://openmx.psyc.virginia.edu/forums/opensem-forums/behavioral-genetics-models