In my previous post Towards Jungian Typology with Data Science I drew the outlines of a novel way to assess Carl Jung’s original personality types using data science. Here is how I’ve gone about with an initial experiment using quite up to date technical methods such as XGBoost and UMAP and the well-researched psychological word categories LIWC. The code used in this experiment is published here for reference.

The website typealyzer.com (R.I.P. 2008–2019) allowed people to post a blog URL and get back the four-letter Myers-Briggs type. Digging deeper into how the MBTI works shows that each of the 16 types have a dominant cognitive function. For simplicity those Jungian cognitive functions can be reduced into four basic functions that are either extraverted or introverted i.e. …


Carl Jung did not develop a quantitative methodology for assessing personality type, which most likely would have made his theory more well-received in the scientific community. However, he considered words spoken by the analysand (i.e. client) as primary empirical data, aswell as paintings etc. Pre-internet the more or less only scientifically acceptable (and economically defendable) methodology to measure personality was self-reporting using rigorously constructed questionnaires. Today, the advances in digital media and data science promises an assessment methodology more faithful to Jung’s original point that the psyche is dynamic, noisy and changes over time.

Psychologist Carl Jung in his 1921 book Psychological Types proposed a theory of four cognitive functions. His own original idea was not the four cognitive functions, but how they are either directed outwards towards the external world of people and things or the inner world of thoughts, emotions and subjective experience. …


Personality type theory is an elusive field of study. The notion that different people can be categorised into a number of psychological types seems to have been around as long as there have been humans. Some theories have been proven wrong. Some theories have even been dangerous.

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Photo by Crawford Jolly on Unsplash

Luckily, today in the modern world we tend to rely on more scientific approach to studying personality and the current state of affairs seems to be in favor of the Five-Factor Model of personality, a.k.a O.C.E.A.N or Big Five. …

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Mattias Östmar

I believe in kind people and humane technology. mattiasostmar.se

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