Hello Bianca,
Randomise uses the groups column to setup an "exchangeability blocks" file, this is used to restrict permutations for paired/repeated measures data where some structure of the data needs to be preserved.
Kind Regards
Matthew
> Thank you Matthew for your fast response! That does indeed help a lot!
> I have one more question, just so that I understand the concept of the group column. When would I need to adapt this column then? Is it only necessary for designs, where I have more than one factor with multiple levels, one of them being the group a participant is in?
> Thanks again!
> Kind regards,
> Bianca
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