Dear all,
I posted a message a few days ago, but unfortunately no response. I would really appreciate any help!
I ran a 3x3 full factorial model with factor 'valence' (positive, negative and neutral images) and factor 'group' (2 clinical groups, and healthy controls).
There is no main effect of group, but a main effect of valence (as expected), but there is also a significant interaction effect (F).
I would like to know how to go about posthocs tests for this interaction effect, with 3 groups and 3 valences. SPM returned some T-contrasts automatically for the interaction, but I cannot make sense of them.
How to go about this?
Thank you in advance,
Kind regards,
Ploon
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