A structured atlas of cognitive biasesfor people who want better decisions.
Bias Codex maps 200 mental shortcuts with definitions, examples, case studies, and practical counters. It is built to make fuzzy thinking easier to notice while there is still time to choose.
Explore by where your thinking gets pulled.
Biases are easier to learn when they are grouped around real situations: choosing, remembering, persuading, interpreting, and explaining.
Decision making
Spot the shortcuts that distort risk, value, confidence, and tradeoffs before they harden into a decision.
Memory
Explore the biases that change what we remember, forget, sharpen, or quietly invent after the fact.
Social judgment
Understand the attribution errors, group effects, and blind spots that shape how we interpret each other.
The same clear read, every time.
Bias Codex gives each concept a consistent shape, so you can scan quickly or go deeper without re-learning the page.
- 01Plain-language definitionEvery bias starts with the useful meaning, without burying the point under academic fog.
- 02Real-world examplesEach entry connects the concept to recognizable choices, conversations, products, and institutions.
- 03Fields of impactBrowse by where a bias tends to show up: memory, persuasion, economics, social life, or judgment.
- 04CountermeasuresThe goal is not trivia. It is a better pause before your next explanation, forecast, or bet.
Get the Complete Bias Codex
Join the waitlist to receive a comprehensive PDF guide covering all 200 cognitive biases. Perfect for reference, study, or sharing with your team.
Backfire effect
The backfire effect is the proposed possibility that a correction makes a false belief stronger rather than weaker. It became a popular explanation for polarized debate, but large studies suggest it is rare; resistance to correction is real, yet people usually become more accurate when given a clear correction.
Read the page