Confirmation bias is the most pervasive of all cognitive biases. It operates at three levels:
1. Selective exposure: choosing information sources that confirm your beliefs 2. Selective interpretation: interpreting ambiguous evidence as confirming your position 3. Selective memory: remembering confirming evidence better than disconfirming evidence
Research by Nickerson (1998) reviewed 81 studies and found confirmation bias appears across politics, science, law, and everyday reasoning. It is especially strong when the belief is tied to identity or strong emotion.
The antidote is active debiasing: deliberately generating alternative hypotheses, seeking disconfirming evidence, and applying the "outside view." MindFrame's reasoning challenges train this directly by forcing you to consider and evaluate competing explanations before committing to an answer.