Hi Dustin,

> For each event, I could extract the mean Z value for eventPPI>baseline or I can extract the mean Z
> from the post hoc t-tests. Do you know which would be better?

It's more straightforward to extract each effect of interest from the post hoc test, and use that as input for BayesianGroupAna.

> So I'm also interested in the effect of group on the above tests as well and, to make it even more
> complicated, I'd like to add a continuous (e.g., age) or interval (e.g., likert-type scale) variable as well.

Just dummy-code your groups with 0s and 1s (or -1s and 1s), and use the coding, together with other quantitative variables for BayesianGroupAna.

> for a voxelwise group PPI analysis would you recommend I take the PPI>baseline or individual level
> contrasts to the group level. With the PPI>baseline then I'd have a lot of repeated measures and I
> should probably use 3dLME, whereas with the contrasts I could probably get away with 3dMEMA.

Either way is fine, but with slightly different assumptions.

Gang