....Not necessarily. Personality type theory is not something set in stone. It's more akin to astrology than astronomy. If you haven't noticed already, there are plenty of people who don't appear to fit in those neat personality-type boxes, no matter how complicated and dynamic it makes itself out to be. Most people tend to relate to certain personality type descriptions simply because of the Forer Effect. The best idea that has ever been abstracted from personality types theory is how similar people are to one another and how most people are within the middle of a spectrum of traits. Very rarely do you find people on one extreme end of a spectrum.  Usually such persons are very imbalanced and unhealthy...