I was wondering how OpenMx treats standardized estimates under equality constraints.
I ran a linear latent growth curve model in OpenMx and constrained all residual variances to be equal. Not surprisingly, they all get to be the same unstandardized estimate. However, OpenMx reports only a single standardized estimate for the residual, which happens to be the one associated with the first observation. Even if the unstandardized estimates are constrained to be equal, the unstandardized ones need not be and in reality seldom are the same.
name matrix row col Estimate Std.Error Std.Estimate Std.SE lbound ubound 1 e S x1 x1 1.0607526 0.08676699 0.6267662 0.05126796
I attach the diagram of my exemplary model, which I created with Onyx. Standardized coefficients are given in parentheses next to unstandardized estimates. For parameter epsilon, OpenMx reports 0.63, which is the value associated with x1. My feeling is that OpenMx should report the complete set of standardized coefficients. Or was this a deliberate design decision?