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Confirmation bias

The tendency to favor information that supports what you already believe.

Published 15 May 2026Updated 30 May 2026

Confirmation bias shows up when people search for, interpret, or remember evidence in a way that protects an existing belief. A useful correction is to ask what evidence would genuinely count against the claim.

Sources

Miserly Information Processing and the Cognitive Reflection Test

Thinking & Reasoning / 2016 / Paper

Foundational CRT update and interpretation guidance.