Yes, I guess I have to look into that. Now I have encountered a new problem I hope you can help me with. I have performed a repeated measures (1-2-3) analysis in FEAT and got a significant F-statistic. When I run the cluster command I find a signigifant cluster with a size of 1035 voxels. However, When I do the same for one of the simple contrasts (2 vs 4) which is the only significant contrast (apart from the F-stat). My first thought was that it was strange that the cluster from the simple contrast was larger than the cluster for the main effect in the same test... But this may not be strange at all? In addition I wonder how I should report results like this. Should I report both the main effect and various simple contrasts in a table, or should I just state that there was a significant main effect, and then report results from relevant simple contrasts? I know this may be basic knowledge for many of you, but I hope you can help me with some hints.
All the best,
Alexander
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