> Is it possible to subtract the beta-coefficient files? Or do I need to do the subtraction before processing?
If you have already set the contrast between the two effects through -gltsym in 3dDeconvolve, then you can take that contrast to your group analysis; otherwise you can use 3dcalc to get the contrast.
> I have several independent variables that will be inputted into this model. Is using 3dMVM the correct
> approach, or is there another program I should be using? Currently, I am using 3dMEMA, but I'm uncertain
> if this would allow me to perform multiple regression analyses.
If you tell us how many you have for those independent variables and what types of variables they are, we would be able to provide more specific help.
Gang