jamovi

Hi,

I just updated the GAMLj module and after doing so the results of different GLMM analyses I was working on drastically changed. I did not do any changes to the models, just the update. Take a look at the attached files.

Thanks.
Tomás

Hi
I cannot see the pictures well. Would you mind posting them again?

Done.
As I said, same random structure, same fixed factors (simple contrast coding), same covariate (postdiction, cluster based centered), same method to calculate dfs, different results. Weird.

Hi Tomas,
I'm afraid I know what is going on. In the previous version, there was a bug in cluster-centering, happening for weired combinations of cluster type and order of cases. The latest version tried to fix it but failed. I've now prepared the update to hopefully fix the issue. This will be version 2.5.2 in a few hours.
For your case, I'd suggest to re-run the analyses with the new version, and check if you get the same as the "before" results.
Furthermore, I've noticed that in your model you have two cluster variables. Keep in mind that "cluster-based centered" centers the variable by the first cluster appearing in the cluster variables list

Hi Marcello,

Okay, I'll re-run the analyses with the new version. And thanks for the tip bout cluster-based centered - I did not know that the centering was done by the first cluster variable. I will also check this on the new analyses.

Best,
Tomás

Centering on more clusters, especially when they are cross-classified, is not that straightforward, so the idea is to leave the user free to prepare the right data beforehand.

Hi Marcello,

I just updated to the new version but now I get this error. Can't run the analysis.

Please update (again) and try again.

I have uninstalled it and installed it again but not yet working - see screenshot

Wow, this bug is really persistent! Let's see if version 2.5.3 solved the issue.