How are personality traits distributed? Let's take a deep dive into the distribution of personality traits on Myers-Briggs-style tests, Big Five personality tests, and Enneagram tests, based on data we collected on 23,000 people globally: This bell-curve-like shape is a problem for MBTI-style tests because they want to classify each person as either Extraverted or Introverted, either Sensing or Intuitive, and so on (usually represented as a four letter code, like ENTJ or ISFP). But, for ...