Cognitive bias generator

Cognitive biases in character writing

Everyone has thinking shortcuts that lead to errors. A character with confirmation bias picks facts that fit what they already believe. Someone might blame others' mistakes on their personality but excuse their own as bad luck. These habits feel normal to the character. Pairing them with defense mechanisms helps show why a character holds onto a flaw even when it hurts them.

A bias only earns its place in a scene when it costs the character something. Confirmation bias is invisible until a character ignores the one piece of evidence that would have saved them. The planning fallacy is a personality quirk right up until a deadline is missed and someone else pays for it. The eighteen biases here range from everyday distortions like catastrophising and black-and-white thinking to social misreadings like the spotlight effect and the fundamental attribution error, where a character forgives their own failure as bad luck and reads someone else's as proof of bad character. Give two characters opposing biases and an argument writes itself, because each one is looking at the same facts and drawing the conclusion their bias already demanded.