> 1. Will it make a big difference to use 3dMEMA vs 3dttest++? When possible, should you
> always use 3dMEMA over 3dttest++?
In theory 3dMEMA is preferred, but in real practice most of the time the difference is likely negligible (or subtle). You may have to try it out and see the difference.
> 2. We also use 3dANOVA3. Should we also replace that with 3dMEMA in some way? Or how
> do you include the reliability from each beta when you have a design where ANOVA is fitting?
The approach to taking reliability into consideration at the group level is only available for t-test, not ANOVA.
Gang