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16 Personalities tests

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16 Personalities Test

Full 16 personalities test: 80 questions for the most precise picture of your personality type.

80 questions · ~12 min

The 16 personalities test, also known as the MBTI (Myers-Briggs Type Indicator), is one of the most widely used personality frameworks in the world. It builds on Carl Jung's theory of psychological types and was turned into a practical questionnaire by Katharine Cook Briggs and Isabel Briggs Myers.

It organizes personality into four independent dimensions:

  • Energy: Extraversion or Introversion.
  • Information: Sensing or Intuition.
  • Decisions: Thinking or Feeling.
  • Organization: Judging or Perceiving.

Combining these preferences produces a four-letter code, such as INFJ or ESTP, corresponding to one of the 16 possible types.

Why its scientific standing is debated

Unlike the Big Five, it sorts people into qualitative types rather than placing them on a continuous spectrum: that makes it intuitive and memorable, but its scientific standing has been debated for decades. The most frequently cited academic critique is David Pittenger's (1993), published in the Journal of Career Planning and Employment: he reviewed the MBTI's statistical structure and concluded that it falls short of several basic standards expected of a psychological test, including predictive validity. One clear contrast with the Big Five: the latter has robust, widely replicated meta-analyses supporting its predictive validity at work (Barrick and Mount, 1991), while the MBTI lacks an equivalent body of evidence on that front.

Here you'll find its origin, the four dimensions explained, and a breakdown of each type. None of this content replaces a professional psychological evaluation or the official MBTI® assessment.

Sources

  • Jung, C. G. (1921). Psychologische Typen (Psychological Types).
  • Myers, I. B., & McCaulley, M. H. (1985). Manual: A Guide to the Development and Use of the Myers-Briggs Type Indicator. Consulting Psychologists Press.
  • McCrae, R. R., & Costa, P. T. (1989). Reinterpreting the Myers-Briggs Type Indicator from the perspective of the five-factor model of personality. Journal of Personality.
  • Pittenger, D. J. (1993). Measuring the MBTI... and coming up short. Journal of Career Planning and Employment, 54(1), 48-52.

Frequently asked questions

What is the 16 personalities test?

It's a personality indicator (also called the MBTI) that sorts people into 16 types by combining four dimensions: Extraversion/Introversion, Sensing/Intuition, Thinking/Feeling, and Judging/Perceiving.

Who created this model?

It's based on Carl Jung's theory of psychological types (1921) and was turned into a practical questionnaire by Katharine Cook Briggs and Isabel Briggs Myers.

Is it scientifically reliable?

It's very popular as a self-discovery tool, but it has less empirical support than the Big Five: its test-retest reliability is lower, and it sorts people into fixed types instead of continuous spectrums.

What's the most common type, and what's the rarest?

The most common tends to be ISFJ (around 13.8% of the population), and the rarest is INFJ (around 1.5%).

How reliable is the MBTI's test-retest score?

Lower than most users assume: research such as McCarley and Carskadon (1983) found that a notable share of people get a different type when they retake the test weeks later, especially on dichotomies where the original score landed close to the midpoint. That doesn't invalidate the model as a reflection tool, but it does temper the idea that your resulting type is fixed and unchanging.

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Legal notice: The tests on this site are purely for orientation and entertainment purposes. They do not replace official assessments under any circumstances. MBTI® is a registered trademark of The Myers & Briggs Foundation, Inc. This website is entirely independent and has no affiliation, sponsorship, endorsement, or rights over that intellectual property. If you wish to take the official, validated assessment, please visit The Myers & Briggs Company website.