The Myers–Briggs Type Indicator is a subjective self-report survey with the objective of showing differing psychological choices in how people observe the world around them and make judgments. It is based on the conceptual theory introduced by Carl Jung, who had considered that humans experience the world using four important psychological functions passion, intuition, feeling, and thought and that one of these four functions is aggressive for a person most of the time.
Four! Really depends on what categories you are talking about though. There is the four they use to type you, the four you fall into, the four others have some up with. It is four though.
