Within psychology, little interest is nowadays shown in the study of psychological types. Maybe this is the main reason why relatively little attention is paid to the work of Carl Gustav Jung involving psychological types. The first part of this paper consists of a short survey of the substance of Jung's typology theory.
Special attention is paid to the relations between the four types which are basic to that theory.
This implies that, in terms of a basic personality description, it is not only important to question whether that person is more introverted or more extraverted, but also whether that person is more yin or more yang. The core of Jung's typology Basically, Jung's typology is simple. Feeling and thinking form a polarity, just as intuition and sensation do. According to Jung, people are equal to the extent that every person possesses these four basic functions. Differences between individuals are based on the fact that the influence of each basic type is of a different strength within each person.