I've run a TCA (CVA), ACA and CBC Analysis with the same attributes and levels in order to show the design differences and the differences in performance.
Now I want to compare the part-worths of the three studies. The part-worths are zero-centered diffs.
Following all the interpretation guidelines, we can just compare differences of part-worths with each other (interval data).
Zero-centered-diffs are scaled and normalized. So in my opinion it is possible to compare part-worths differences from study A with part-worth differences from study B. Am I right?
Thanks for your help.