The Myers-Briggs Type Indicator (MBTI) describes personality through four either-or preferences — Introversion or Extraversion, Sensing or Intuition, Thinking or Feeling, Judging or Perceiving — whose combinations produce sixteen types, each denoted by a four-letter code.

Key Insight

MBTI's gift and its limit are the same thing: it turns a continuous reality into a memorable picture. People are not cleanly one pole or the other — preferences are matters of degree, and that is the model's main scientific weakness. But the four-letter type gives a shared language for self-understanding that no dimensional model has matched for sheer usefulness, which is why it endures despite the critiques.

Sources

  • Jung, C. G. Psychological Types (Collected Works, Vol. 6) — originally published 1921; Princeton University Press, 1971.
  • Myers, Isabel Briggs, with Peter B. Myers. Gifts Differing: Understanding Personality Type — Davies-Black Publishing, 1980.
  • Myers, Isabel Briggs, et al. MBTI Manual: A Guide to the Development and Use of the Myers-Briggs Type Indicator — Consulting Psychologists Press, 1998.