What it measures
The Myers-Briggs model sorts people into sixteen types built from four either-or preferences: where attention is directed (Extraversion or Introversion), what kind of information is trusted (Sensing or Intuition), how decisions are reached (Thinking or Feeling), and how the outside world is approached (Judging or Perceiving). Katharine Briggs and Isabel Myers took the scheme from Carl Jung’s account of psychological types and turned it into a questionnaire in the 1940s.
This is not the MBTI. The Myers-Briggs Type Indicator is a published, commercially licensed instrument owned by The Myers-Briggs Company, and none of its items appear here. What this test takes from it is the framework alone: the four either-or preferences and the sixteen types they combine into, which come from Jung’s account of psychological types. The questions here are our own.
This version asks 70 questions, each a choice between two statements, and returns a four-letter type together with how strongly each preference came through.
What the score supports
A type gives people a shared vocabulary for differences they already notice in each other: who needs quiet to think, who decides quickly and who wants to keep options open, who reads a situation through the facts and who reads it through the people in it. As a prompt for that kind of conversation, in a team or on your own, it does useful work, and it is what most people come to the test for.
Where it falls short
The four preferences are not categories in the data. They are continuous, and people bunch in the middle of them rather than dividing into two camps. The instrument reports a letter regardless, so anyone who lands near a boundary is assigned to a side that a handful of different answers would have reversed. That is the reason retesting the same person a few weeks later often returns a different four-letter type.
Two things follow. The type is not stable enough to treat as a fixed property of a person, and it predicts performance at work too weakly to earn a place in hiring, promotion or any other decision that affects someone’s employment. A measure built and validated for that purpose belongs there instead.
We publish this test because the preferences underneath it are real and worth thinking about, not because the four-letter label carries the weight that is usually put on it. If you want the same territory measured on continuous scales rather than sorted into boxes, Big Five 50 and HEXACO 60 do that, and both report against reference data.
How it works
- Who it is for: adults, 18 and over.
- Length: 70 questions.
- Time: most people finish inside 15 minutes, and the test closes at 30.
- Format: self-report, each item a choice between two statements.
- Result: a four-letter type and the strength of each of the four preferences.
- Reference data: available for adults generally.
- Cost: free to take, and the result is free and immediate.
- Confidentiality: your answers are held in confidence and are described in our privacy notice.