Hi, In my SPSS data I have found a (significant) main effect. Now I want to explore this effect, to see what is the cause of it. I would like to find a contrast in an interaction. At this point I have split the file "manualy" by using split file, and then conducted: general linear model -> univariate with a post hoc tuckey test. Still I'm not getting the results I would like to. What am I doing wrong, or what should I do? Thx in advance, Stijn