Dear all,
I have a question regarding my full factorial design. In my design, I have one between-subject factor group and two within-subject factors with two levels each. I also added a covariate and calculated the interaction between the group factor (factor 1) and my covariate. The contrast to check for significant results of the factor 1 x covariate interaction is not defined automatically. From previous posts, I think that the contrast to check the interaction must be defined as following:
[0 0 0 0 0 0 0 0 1 -1]
I attached the design matrix of my model to this message. The first 8 columns represent my regressors and the last two columns are representing my covariate (after indicating that i want to calculate the interaction between group and covariate, the covariate was split between groups).
Is my contrast correct? Any help is appreciated!
Best,
Jella Voelter
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