Hello FSL experts,My level 3 design model was roughly as follows, where copes 1-3 would give me group-level results for my non-overlapping subject groups (GROUP 1-3), respectively (COV1, COV2 stand for covariates).I later wanted to obtain an overall group activation averaging across GROUP 1,2,3. To do so, I changed my model such that C1 would be (1, 1, 1) for the first three columns. When I ran this model though, I got near zero activation for C1 even though originally, GROUP 1, 2, and 3 all showed significance above .05 threshold for the same contrast.I was hoping someone could help shed some light as to why this would be the case and how I would set up my model differently to get the group level activation averaging across all three subject populations. Thank you!Best,Michelle
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