Thanks for the follow-up, Nic! I was wondering how 3dWilcoxon performed in dealing with outliers in your case. I'm glad that it worked well for you.
> In contrast, using 3dMann-Whitney for the between-group comparison seems a bit conservative (or the
> effect is just not there though 3dMW also did not show a significant effect in another study where
> 3dttest++ and 3dMEMA showed significant effects). Are there other non-parametric tests for
> between-group comparisons in AFNI?
Under what circumstance are you running 3dMann-Whitney for group comparison? Outliers or something else? Could you elaborate a little about the details?
Gang
