Thank you very much for this helpful answer. I also set up a ff design with 3 factors. In order to assess differences between young and old groups, how would you set up the contrasts? If it was a classical IA -1 1 1 -1 and 1 -1 -1 1 would be appropriate terms right? (2 timepoints, 2 groups) But this means that it does not assess changes that are only there in one group while the other shows no change at all, right? But if this was the case, how would one set up a contrast?
If I want to compute a difference in connectivity score, do I need to do this for every individual, seperately? And if so, which connectivity do I take? Only the significant pre-post changes within each group?
Thanks again
Elisabeth
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