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According to ScienceAlert (This article and its images were originally posted on ScienceAlert January 12, 2019 at 05:54AM.)
You may have witnessed this scene at work, while socializing with friends or over a holiday dinner with extended family: Someone who has very little knowledge in a subject claims to know a lot. That person might even boast about being an expert.
This phenomenon has a name: the Dunning-Kruger effect. It’s not a disease, syndrome or mental illness; it is present in everybody to some extent, and it’s been around as long as human cognition, though only recently has it been studied and documented in social psychology.
In their 1999 paper, published in the Journal of Personality and Social Psychology, David Dunning and Justin Kruger put data to what has been known by philosophers since Socrates, who supposedly said something along the lines of “the only true wisdom is knowing you know nothing.”
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