Bias Handbook
EducationBusiness

Bias Handbook

Stepapp, Inc. · released 11 May 2026 · Open in App Store ↗

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Description

Bias Handbook is a curated reference guide to the cognitive and behavioral biases that shape human thinking, judgment, and decision-making — now with visual diagrams for every bias and a built-in library of the behavioral-design frameworks professionals use to change behavior.

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, a visual diagram, and links to related biases.

New in this version: the Frameworks tab. Go beyond spotting biases to actually applying behavioral science, with 12 of the field's most trusted frameworks — COM-B, the Behaviour Change Wheel, the Theoretical Domains Framework, the BCT Taxonomy, EAST, MINDSPACE, Nudge, the Fogg Behaviour Model, Self-Determination Theory, Dual-Process (System 1/2), the Theory of Planned Behaviour, and the Transtheoretical Model. Each is explained in depth, illustrated with its own diagram, and cited to its original peer-reviewed or government source.

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

Visual diagrams — every bias has a clean, color-coded schematic that captures the idea at a glance

NEW — Frameworks tab: 12 in-depth behavioral-design frameworks (COM-B, EAST, Nudge, Fogg, and more), each with its own diagram

Diagnostic questions, end-to-end worked examples, implementation playbooks, templates, and practice exercises for every framework

Every framework cited to its original trusted source

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

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 the frameworks to change behavior in everyday life and work.