Introduction:Cognitive Bias Labs offers interactive educational tests and explainers that help people recognize common thinking errors and decision-making blind spots.
Cognitive Bias Labs is an educational psychology website focused on cognitive biases. Its interactive exercises cover topics such as the Dunning–Kruger effect, confirmation bias, anchoring, survivorship bias, the availability heuristic, sunk-cost thinking, hindsight bias, optimism bias, and framing.
Each topic combines a short test or demonstration with plain-language explanations, examples, and suggestions for more deliberate decision-making. Results are educational and reflective, not a clinical diagnosis, psychological assessment, or substitute for professional care.
Research basis:
This is a source-based directory listing prepared from public product information; it is not represented as a hands-on test. Last updated August 8, 2026. Read our methodology.
How to use this tool
Choose one bias connected to a recent decision and complete the exercise before reading the explanation.
Answer honestly without trying to optimize for a correct score or infer what the test designer expects.
Compare the feedback with the original context, identifying missing evidence, incentives, uncertainty, and alternative explanations.
Write one concrete debiasing action such as seeking disconfirming evidence, using a base rate, or delaying commitment.
Use results for education and discussion only, never to label intelligence, diagnose mental health, or make clinical decisions.
Core Features
✓Interactive browser tests for common cognitive biases.
✓Immediate educational feedback after each exercise.
✓Plain-language explanations of how reasoning errors operate.
✓Examples drawn from ordinary decisions and real-world judgments.
✓Reference index covering confirmation, anchoring, framing, and other biases.
✓Articles and practical prompts for critical thinking.
✓Free browser-based access without a published paid tier.
✓Explicit educational framing rather than diagnosis or psychological assessment.
Use Cases
#1Explore personal decision blind spots
#2Teach a class about cognitive bias
#3Discuss reasoning errors with a team
#4Practice considering opposing evidence
#5Learn how framing changes choices
Frequently Asked Questions
It is a free educational website with interactive demonstrations, explainers, examples, and articles about cognitive biases.
Topics include confirmation, anchoring, survivorship, availability, sunk cost, hindsight, optimism, framing, Dunning–Kruger, and others.
No. They are educational exercises and not diagnoses, psychological evaluations, or measures of intelligence.
Yes. The public tests and educational materials are available without a published paid plan.
No. A short demonstration illustrates a reasoning pattern but cannot establish a stable trait or explain an entire decision.
They can support discussion when the educator explains limitations and avoids grading students on a reflective result.
Yes. Teams can examine framing, evidence, assumptions, and decision processes without using results to stigmatize individuals.
Read the explanation, revisit the decision evidence, and choose one practical step that reduces the relevant bias.
No. Awareness helps, but structured processes, independent evidence, checklists, and diverse review often matter more.
No. Anyone with clinical concerns should consult a qualified professional.
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