Bias Handbook

Bias Handbook is a curated reference guide to the cognitive and behavioral biases that shape human thinking, judgment, and decision-making.

Explore well-known biases such as confirmation bias, anchoring, survivorship bias, framing effects, the availability heuristic, and many more — each with a clear definition, real-world examples, and links to related biases.

Designed for students, researchers, product teams, behavioral scientists, marketers, investors, and anyone curious about how the mind works, Bias Handbook makes complex behavioral concepts easy to understand and accessible anywhere.

Features:
• A comprehensive, growing library of cognitive and behavioral biases
• Fast in-app search across names, aliases, and summaries
• Filter by category — Decision-making, Memory, Belief & Probability, Social, and Self-perception, each with its own color
• Bias of the Day — a fresh bias on the banner the first time you open the app each day
• Bookmarks — save biases worth revisiting in a dedicated tab
• Personal notes — capture how each bias shows up in your work or life, with a tab listing every bias you've noted
• Daily reminders — set a time for a gentle nudge to learn one bias a day
• Clean, intuitive browsing experience
• Simple explanations with real-world examples and cross-references between related biases
• An educational reference for psychology and decision science
• Regular updates with new content

Built by the Center for Behavioral Decisions, a research and consulting unit working at the intersection of behavioral economics, psychology, and decision science.

Understand how biases influence decisions — and learn to recognize them in everyday life.