I passed the hogan but I can't tell you why as I know numerous great people who have not. What I can tell you is that in basic indoc they do another personality type test and then you divide up into 4 different personality groups. Its a communication exercise but I was surprised the class was evenly divided between the 4 groups. I guess what I'm saying is that I don't think with the hogan they are looking for a certain type of personality, just be as honest and authentic as possible.