Means for growth curve with ACE decomposition
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svrieze
Joined: 01/03/2010
Forums
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
It depends a bit on whether
FacLoadings %*% FacMeans
where FacMeans is a vector of free parameters for the means of each common factor, and FacLoadings are the common pathway factor loadings. At the same time, it is necessary to remove (or fix at zero) the parameters that directly estimate the means of the observed variables.
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In reply to It depends a bit on whether by neale
Thanks, I had already tried
Thanks,
-Scott
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