---
title: "Cognitive Bias"
description: "A systematic, predictable pattern of deviation from rational judgment, arising from mental shortcuts the brain uses to process information quickly."
last_updated: "2026-08-02"
---

# Cognitive Bias

A systematic, predictable pattern of deviation from rational judgment, arising from mental shortcuts the brain uses to process information quickly.

*Example: After deciding a coworker is careless, you notice every mistake they make and forget every job they do well.*

## Sitemap

See the full [sitemap](https://www.criticalthinkingexercise.org/sitemap.md) for all pages.