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Why Our Brains Take Shortcuts

The Efficient Brain

System 1 vs System 2

Everyday Biases

Confirmation Bias — The Echo Chamber

Practical Debiasing

Practice: Spot the Bias

Anchoring — The First Number Sticks

Availability Heuristic — What is Easy to Remember

Dunning-Kruger Effect — The Confidence Gap

Simple Checks That Save You

Building a Bias-Resistant Routine

What You Learned

Quiz: Two Systems

Quiz: Recognizing Biases

A practical introduction to cognitive biases for adults — confirmation bias, anchoring, availability heuristic, and Dunning-Kruger effect with actionable debiasing techniques.

Your brain takes shortcuts — thousands a day. Learn to spot the most common ones so you can make better decisions at work, in life, and online.

Thinking Clearly: Common Cognitive Biases

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