Dunning-Kruger effect

What it is

People with little knowledge of a skill tend to overestimate their competence, while experts may underestimate theirs. How large the effect is, and why it occurs, is still debated.

Related

• Overconfidence effect bias
  Novices' inflated self-assessments are a special case of overconfidence.
• Argument from personal incredulity fallacy
  Finding something implausible because you do not understand it is typical of limited knowledge about the subject.
• Curse of knowledge bias
  The mirror image: experts can underestimate how hard their skill is for others.
• Chauffeur knowledge bias
  Fluency can be confused with competence, by the speaker and the audience.
• Illusion of skill bias
  A little knowledge, or a lucky run, is mistaken for real skill.

References

• Wikipedia: Dunning-Kruger effect en.wikipedia.org
• Wikipedia: List of cognitive biases en.wikipedia.org
• Wikipedia: Cognitive bias codex en.wikipedia.org

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