Hi,
In a full factorial design with 2 between subjects factors: like disease (patients vs controls) and sex (females vs males),
how to define in contrast manager main effects on gray matter volume i.e. effect of disease and effect of sex and interaction of the two?
Could you please tell me what numbers should I put in the contrast manager to specify the above?
The manual that I found on the web:
dbm.neuro.uni-jena.de/vbm8/VBM8-Manual.pdf
suggest running simply T-tests but how to define interaction?
Best,
Kasia
|