C.G. Jung's typology test questions psychological balance between introverted and extroverted inherent behavioral traits. It examines personal integration of the two personality types as an individuation process that determines the individual's relationship with reality. It additionally served as the foundation for the Myers-Briggs Type Indicator used in personality definition.
The concepts of introversion and extroversion are essential to the typology test's framework in regard to exploring differences between internal and external methods of thought. An introverted individual, for example, may perceive reality through introspective pursuits involving meditation or imaginative thinking. An extrovert, however, may better understand life through active social communication within exterior environments.
Jung's psychology viewed each of these personality types as necessary in establishing a sense of wholeness throughout both inner and outer spheres of existence. If either is entirely neglected, an imbalance may result and generate bias towards introverted and extroverted characteristics.
These ideas were eventually applied to create the Myers-Briggs Test, which indicates personalities as belonging to one of 16 types. This psychological evaluation is used to indicate individual attributes that may manifest as strengths and weaknesses while participating in real world situations and includes questions intended to identify components that comprise the personality as a whole.