Hi Leslie-
3dANOVA3 can handle multiple groups and repeated measures, see
Type 4 and Type 5, it does require you to have a balanced design. If you have unequal participants in each group, or need for a four-way (or higher factor) ANOVA, I would recommend using 3dMVM (Gang's new program) instead of the MATLAB toolbox (GroupAna). Information can be found
here and the
help page for the program is very useful as well.
Best,
Peter
Edited 1 time(s). Last edit at 09/01/2014 03:27PM by Peter Molfese.