So i did an experiment with 4 groups, each getting different advertisement communications tasty or healthy benefits:
group 1: control group, no health or taste benefits group 2: only health benefits group 3: only taste benefits group 4: health & taste benefits
I have 4 different dependant variables: purchase intention, attitude, credibility and benefits all measured on 7 point likert scale
So I thought i had to do a 2 way anova because health and taste are the IV. But how do i test these? Because the interaction of them is already tested in group 4?
I work with SPSS