Analysing your IQ
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A cognitive bias where people with limited knowledge or competence in a domain overestimate their own abilities, while experts may underestimate theirs.
The Dunning-Kruger effect is a cognitive bias where people with limited competence overestimate their abilities because they lack the knowledge to recognize their deficiencies.
Named after psychologists David Dunning and Justin Kruger (1999). The effect occurs because evaluating competence requires the same skills as being competent. Beginners lack the knowledge to recognize what they don't know.
Demonstrated through studies comparing self-assessed performance to actual performance. Those in the bottom quartile typically overestimate most, while top performers slightly underestimate.
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Nisbett, R. E. (2015). Mindware: Tools for Smart Thinking. New York: Farrar, Straus and Giroux.
Sternberg, R. J. (2020). The Cambridge Handbook of Intelligence (2nd ed.). Cambridge University Press.
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The Dunning-Kruger effect is a cognitive bias where people with limited competence overestimate their abilities because they lack the knowledge to recognize their deficiencies.
Evaluating your own competence requires the same skills as being competent. Beginners lack the expertise to recognize what good performance looks like, so they can't see their gaps.
Experts are more calibrated and may assume others share their knowledge. True underestimation is less common than the effect on the low-competence end.
Seek feedback from experts, cultivate intellectual humility, assume you know less than you think, and look for evidence that contradicts your beliefs.
Yes, though the effect is smaller than popularized. Recent research confirms a metacognitive gap but cautions against oversimplified interpretations.
