Hello,
Is there any means of performing a sphericity correction on the results of an ANOVA implemented by 3dANOVA (or any other program of which I might be unaware)? From my search of the documentation thus far, I cannot find any way to carry out a voxelwise Greenhouse-Geisser or Huynh-Feldt correction, but I thought that I would check before ruling out this possibility completely.
Thanks very much,
-Karin