I have run a MANCOVA in SPSS version 15. My design is a pre-test/post-test with two treatments and a control group. There are six measures/dependent variables and I used the pre-test scores as the covariates. I have an overall significant effect, and the table of between-subjects effects shows significance on two of the dependent variables.
Now, I am stuck on the post hoc testing. I need to know which groups significantly differ from the others, but the Bonferroni test can't be run with covariates. I need to look at differences between groups on the adjusted post-test scores.
Am I missing something? What post hoc testing is done for MANCOVA and ANCOVA???
Thanks in advance,