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  ASReml  ~  covariance between factors in FA models

j.hadfield@ed.ac.uk
Posted: Wed Dec 19, 2018 9:31 am Reply with quote
Joined: 13 Aug 2008 Posts: 37
Dear all,

I have a multi-trait analysis where the traits can be partitioned into two groups. I have fitted separate k=1 factor analytic models to each group. What I would like to do now is fit a covariance between the two sets of factor scores, but I'm not sure if this is possible. I guess I would need to constrain one of the loadings in each FA term, and then fit a 2x2 unstructured covariance matrix for the factor scores, but I haven't found a way to do this. Ideally I would like to do this in ASReml-R, and if anyone has any suggestions that would be great.

Cheers,

Jarrod
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