Covariance structure in GAMLj Mixed Model?

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by Asia » Tue Aug 11, 2020 12:03 pm

I have a question about covariance structure used by default in GAMLj Mixed Model. On the website: I found information that if we want to obtain a variance component (VC) model we should select "Not correlated" option in "Effects correlations" . Do I undestand correctly that by default this modul assumes unstructured covariance structure (UN) ?

Thanks a lot for all your help!
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by » Mon Aug 17, 2020 11:25 am

Yes, you assume well. GAMLj uses the same default that the underlying R lmer() command. Thus, UNstructured by default, meaning all random coefficients are allowed to be correlated.
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