yuming ning posted on Thursday, November 13, 2008 - 4:25 pm
i have a simple question for coding my hypothesized model is A->D->E B->D->E A->E B->E C->E hence my codes will be E on A B C D; D on A B; but how do i test A<->B (ie, cov(A,B))? i tried adding (A with B;) into above codes, but the result gave me estimates for all of cov(A,B), cov(A,C), and cov(B,C). i only want cov(A,B) and assume cov(A,C)=cov(B,C)=0
In regression, the means, variances, and covariances of the covariates are not parameters in the model. The model is estimated conditioned on the covariates. You should not mention a WITH b. If you want to know the correlation between a and b, see the sample statistics.
I have a question concerning the test of correlations. How do I test if correlations between two latent factors (e.g. between level and slope) are significantly different between groups or time points? Is this possible in Mplus?