Hello,
I have performed an Anova 2x2 using full factorial for a second level
analysis and checked for the main effect for Factor_1. I have performed a
separated Anova 2x2x2 , using the same contrast images but adding a factor
(Factor_3) to my previous design. When I compute the main effect of Factor_1
I get –more significant voxels than for the anova 2x2. Do I just see more
false positives or it’s because the adding of that factor improves my design?
In my 3-way anova 2x2x2 I have 2 cells with one single contrast image, is
this a big problem?
Thanks a lot,
Joanna
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