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Eiko Fried @EikoFried
, 6 tweets, 3 min read Read on Twitter
1/6 When you see someone use the Myer-Briggs Type Indicator in a professional context, call them out. It does not meet basic criteria of psychometric scales, was "developed" in the 40s by people without any training, & is based on outdated psychoanalytic ideas.

Long version 👇
2/ MBTI categorizes people according to outdated archetypes based on ideas of Carl Jung that have not been taken seriously for many decades in psychology. These archetypes are as valid as zodiacs or tarot cards, and have hardly any external validity.

en.m.wikipedia.org/wiki/Jungian_a…
3/ MBTI lacks validity and reliability. "Scientific" work on MBTI is largely published in a journal that is funded by the people who make money with it.

en.m.wikipedia.org/wiki/Myers–Bri…
4/ VOX has a nice 2015 article that summarizes many of the issues.

vox.com/2014/7/15/5881…
5/ In addition, personality works as a continuum: everybody is somewhere between intro- & extravert. MBTI cuts these normal distributions and assigns them to extremes, which explains the low re-test reliability (~50% get a different type when retaking the test after 5 weeks).
6/6 So whenever you see anybody using the MBTI in a professional context, call them out. All it does is make a few people rich.
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