Psychologist Carl Jung described these personality types in the early 1900s. He suggested that the main difference between people is between the source and direction of their expression of energy.

A psychologist named Carl Jung began using the terms introvert and extrovert (sometimes spelled extravert) in the 1920s. These two personality types sort people into how they get or spend their ...

Created in the 1940s, the MBTI is based on philosopher Carl Jung’s theory of personality types. Its goal was to help people understand themselves better and select occupations in line with their ...

Carl Gustav Jung died 50 years ago today. Alongside Sigmund Freud, ... Personality tests, such as Myers-Briggs Type Indicators, draw directly from them.