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What is the Dunning-Kruger effect?

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Quick answer

The Dunning-Kruger effect is a cognitive bias where people with little knowledge in an area overestimate their ability, while true experts often underestimate theirs. In short: the less you know, the more confident you can wrongly feel. Beginners often overrate their competence.

Key things to understand

  1. Beginners often overrate their competence.
  2. They lack the knowledge to see their own mistakes.
  3. Experts tend to underrate themselves, assuming things are obvious.
  4. More learning usually brings more realistic self-assessment.

People also ask

What is the Dunning-Kruger effect?
A bias where people with limited knowledge overestimate their skill, while experts may underestimate theirs.
Why does the Dunning-Kruger effect happen?
The same lack of knowledge that causes mistakes also prevents people from recognizing those mistakes.
How do you avoid the Dunning-Kruger effect?
Seek feedback, keep learning, and stay humble about the limits of what you know.