Updated: Jun 16, 2021
The Dunning-Kruger effect is a cognitive bias hypothesis proposing that people with low ability at a task will overestimate their ability.
It was proposed by social psychologists David Dunning and Justin Kruger, and stems from an illusion of superiority whereby people are unable to recognise their lack of ability. Without the self-awareness of metacognition, people cannot objectively evaluate their level of competence.
"The greatest enemy of knowledge is not ignorance, it is the illusion of knowledge" - Daniel J. Boorstin