> It is the file that is output when making my interaction regressor in step 4 with the output of 3dTfitter
> and my coded stim file which has 1,0,and -1's. That output file has -0's. Is that just because some of
> the values in the output from 3dTfitter are so small?
That's most likely the reason.
> I passed it through the rest of the pipeline up to the group analysis and everything ran fine, so I am
> not sure how this would affect the analysis.
I would not worry much about it. Does the group analysis result make sense to you?
Gang