Myers-Briggs

Myers-Briggs Type Indicator (MBTI) took Jung's Psychological Types (1921) and recast it as a sixteen-type instrument built from four dichotomies: Extraversion / Introversion, Sensing / Intuition, Thinking / Feeling, Judging / Perceiving. The result is a widely legible vocabulary — for many readers, the first archetypal language they ever encounter.

Why it's here

MBTI is useful as a doorway. Its eight cognitive functions (Ni, Ne, Ti, Te, Fi, Fe, Si, Se) remain analytically productive even where the sixteen-type labels are contested. On this site MBTI appears as a parallel vocabulary — rarely as a primary cluster member, often as a secondary resonance.

Limitations

Most psychometrically contested system here. Type-stability across retests weaker than the system implies; corporate use widely criticized. Retained for pedagogical accessibility as a doorway to Jung's four functions.

See the meta-debate on whether MBTI should be included at all.