Etymology

Dunning-Kruger effect

Today it means: A cognitive bias where an individual with limited knowledge or competence in a specific domain tends to greatly overestimate their own ability relative to objective criteria or the performance of others. Full definition →

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The story

Dunning + Kruger + effect. Coined on everything2 in 2002 by user uucp, who in 2005 copied the same entry to Wikipedia under the title Dunning-Kruger syndrome, named for David Dunning and Justin Kruger of Cornell University, who studied the phenomenon.

Etymology from Wiktionary, CC BY-SA 4.0.