Type frameworks

Type frameworks — MBTI is the best known — sort people into discrete categories built on Carl Jung's ideas: introvert or extravert, thinking or feeling, and so on. Sixteen labels, each with a memorable name and a portrait. The appeal is real: types give people a shared language for differences that are otherwise hard to talk about.

The traits underneath the letters are real — MBTI extraversion correlates strongly with Big Five extraversion. Types are genuinely useful as vocabulary: teams that discuss "how an INTP and an ESFJ plan differently" are often really practising perspective-taking, and that works. The portraits resonate because they describe common human patterns.

The categories are the weak point. Most people score near the middle of each dimension, so a small mood shift can flip your letter — test-retest studies find a third to a half of people get a different type within weeks. The instrument was not built by academic psychometricians and is rarely used in published research. That is why our MBTI-style test reports the four dimensions as percentages alongside the type, and why we treat your type as a conversation starter, not a diagnosis.