First had to take a Myers-Briggs style test, which the results were submitted to Ariens. In the interview this was never referenced but I assume it was used to direct the line of questioning. Had a quick phone chat, but the real heavy lifting was in the in person interview. Talked with a few high level managers, mostly in a conversational tone. No case studies or anything, fairly simple and interesting line of questioning. Some managers were obviously more interesting in their questions than others.