Hello,
I’m trying to create an interaction map (A1 > A2) > (B1 > B2) that will show the direction of (positive and negative) effects. Can this be done using 3dANOVA2? For example, using 3dANOVA2, I can produce separate maps with direction by labeling the 2 X 2 design as 4 conditions (A-D), and creating the contrast for A > B using –acontr 1 -1 0 0, and for C > D using –acontr 0 0 1 -1. Given this, can I also specify (A > B) > (C > D)? If so, how?
Thanks.