Question 1

Why is overconfidence so persistent even among experts?

Accepted Answer

Because subjective confidence is influenced by factors like how fluently a judgment comes to mind, which have nothing to do with actual accuracy, and expertise does not reliably correct for this.

Question 2

Does more knowledge in a domain reduce overconfidence?

Accepted Answer

Not reliably, expertise can sometimes increase overconfidence in areas of partial knowledge, since more familiarity can make a judgment feel more certain without necessarily making it more accurate.

Question 3

How can I check whether my confidence in a judgment is actually warranted?

Accepted Answer

By explicitly reviewing your track record of accuracy in similar past situations, rather than relying on how certain the judgment currently feels.

Question 4

What is a practical way to reduce overconfidence in decisions?

Accepted Answer

Seek outside calibration or feedback, and systematically track past predictions against actual outcomes to build a more realistic sense of your own accuracy over time.

Overconfidence Bias: When Confidence Outpaces Accuracy