Introversion and extraversion is a personality dimension. It was promoted by Carl Jung in the 1920s. Individual people differ on this scale. According to the theory, introverts get energy from inside themselves (ideas and concepts in their own minds), while extroverts get energy from outside of themselves (interacting with other people). There are many ideas about introversion and extroversion which are false, such as the idea(s) that all introverts are shy, antisocial and non-emotional. 