A concept · How We Misjudge People · Biases
The Dunning-Kruger Effect
Too little skill to see how little skill you have.
Ask someone who has played chess for a month how good they are, and they place themselves well above where a rating would put them. Ask a master, and they name the gap between themselves and the best in the world with precision. Why would the person with less skill have the more flattering estimate? The beginner's games are full of mistakes that only a stronger player could see, and the beginner is not yet that player. Nothing feels wrong from inside. What would it take to notice an error we do not yet have the skill to recognise?
What The Dunning-Kruger Effect means
The Dunning-Kruger effect is the pattern in which the least skilled in a domain overestimate their standing the most, because judging the quality of a performance takes the very competence they lack, while the highly skilled often underestimate themselves because the work feels easy and they assume it feels easy to everyone. Owning this changes what we do with the feeling of doing well. We stop treating confidence as a reading of competence and start treating it as a count of the errors we can currently see, which in a new domain is close to zero for the worst possible reason. We look for something outside ourselves that can score the work: a mentor, a market, a measured result. Before, the first month felt like talent. After, the first month is the one period when our own verdict is worth least.
The Dunning-Kruger Effect examples: where it shows up
- At work: a newly promoted manager rates their first quarter a success, and the first real signal of what went wrong is a resignation.
- With money: a first-year investor whose picks rose in a rising market credits skill, lacking the skill to tell a lucky year from a good one.
- In the news: a public figure pronounces on a field after an evening of reading, with a certainty the field's experts would not permit themselves.
Where it sits
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