Personality Type: The MBTI is based on the theory that individuals can be classified into one of sixteen distinct personality types, which are a combination of four dichotomous preferences.
Dichotomous Preferences: The four dichotomous preferences measured by the MBTI are Extraversion (E) vs. Introversion (I), Sensing (S) vs. Intuition (N), Thinking (T) vs. Feeling (F), and Judging (J) vs. Perceiving (P).
Cognitive Functions: The MBTI is based on Carl Jung's theory of psychological types, which proposes that individuals have dominant and auxiliary cognitive functions that shape their personality and decision-making.