Debunking the Dunning-Kruger effect – the least skilled people know how much they don’t know, but everyone thinks they are better than average. The Dunning-Kruger effect, which claims that the least skilled individuals consistently overestimate their abilities, has been debunked as a mathematical
, leading to the sense that the Dunning–Kruger effect is intrinsic to how human brains work. For everyday people, the Dunning-Kruger effect seems true because the overly arrogant fool is a familiar and annoying stereotype.
The worst test-takers would also overestimate their performance the most because they are simply the furthest from getting a perfect score. Additionally, the least skilled people, like most people, assume they are better than average. Finally, the lowest scorers aren’t markedly worse at estimating their objective performance.
Then, just as Dunning and Kruger did, we divided these fake people into quarters based on their test scores. Because the self-assessment rankings were also randomly assigned a score from 1 to 100, each quarter will revert to the mean of 50. By definition, the bottom quarter will outperform only 12.5% of participants on average, but from the random assignment of self-assessment scores they will consider themselves better than 50% of test-takers.
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