Covariance structure in GAMLj Mixed Model?

General help and assistance with jamovi. Bug reports can be made at our issues page: https://github.com/jamovi/jamovi/issues . (If you're unsure feel free to discuss it here)

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: https://gamlj.github.io/mixed.html 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!
Asia
Asia
 
Posts: 1
Joined: Tue Aug 11, 2020 11:50 am

by mcfanda@gmail.com » 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.
User avatar
mcfanda@gmail.com
 
Posts: 207
Joined: Thu Mar 23, 2017 9:24 pm


Return to Help