Foundations

MBTI Basics

The four letter pairs, cognitive functions, Jungian roots and how to tell if you have been mistyped.

What are the 5 rarest MBTI types?

The five rarest MBTI types are usually given as INFJ, ENTJ, INTJ, ENFJ and ENTP. Why they're rare, where the numbers come from, and what rarity really means.

4 min read

What was Jung's No. 1 personality?

Jung's No. 1 personality was his name for his everyday, outward-facing self, set against a timeless inner No. 2. What it meant, and what his own type was.

3 min read

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