Anonymous posted on Sunday, June 19, 2005 - 1:59 pm
hi Prof. Muthen
I have a question about the latent interaction model estimated by Mplus.
The literature on latent interaction always mentioned the necessarsity of estimation of latent means for the latent interaction term.
Consider Mplus example 5.13: E(f3) =E(intercept+gamma1*f1+gamma2*f2+gamma3*(f1xf2)+error) (assume E(f1)=E(f2)=0 for identification), still, E(f3)= intercept+gamma3*E(f1xf2) = intercept+gamma3*cov(f1,f2) if we want E(f3)=0, then intercept has to be equal to -1*gamma3*cov(f1,f2). Is this what Mplus doing?
Also, cov(f1xf2,f1) and cov(f1xf2,f2) --- are they fixed to be zero all the time internally (as they should be under normality for f1 and f2)??