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Dear SPM experts, I have design two models into spm8 for an ancova. both are exactly the same but (2 groups and 3 covariates), in the first one I choose ANCOVA = "NO", and the second one I'd choose "YES", and the results are so different, The first one actually show no results at all, and the second model (ANCOVA=YES) have some results, even after multiple comparisons correction. My questions are: Which would be the correct way to interpret my results if I use the 2nd model?, and what's the difference, when I choose ANCOVA="YES" against ANCOVA ="NO"? Many thanks in advanced, Gabriel.