The four temperaments: history and research

    The four temperaments are a historical lens on how people react, what they need and why they clash.
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    Are the four temperaments scientific?

    Not in the modern sense. The four temperaments come from ancient humoral theory: Hippocrates and later Galen linked character to four bodily fluids. The biology was wrong, but the descriptions lasted.

    In the 20th century Hans Eysenck showed the four types line up loosely with two modern traits, extraversion and emotional stability, and David Keirsey revived the word temperament for a four-type model of his own. Today psychologists measure personality with the Big Five, so treat your temperament as a reflective lens, not a diagnosis. The guides below cover each temperament in love.

    • Hippocratic and Galenic humoral theory (c. 400 BC to 2nd century AD), the historical origin of the four temperaments.
    • Eysenck, H. J. (1967). The Biological Basis of Personality. Charles C. Thomas. Links the classical temperaments to extraversion and neuroticism.
    • Keirsey, D. (1998). Please Understand Me II. Prometheus Nemesis.

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