decision-making

In 1981, Tversky and Kahneman showed that identical outcomes produce opposite choices depending on wording. The Asian disease problem revealed how framing drives decisions — not logic.

Cognitive biases are systematic errors in thinking produced by the brain's fast, automatic reasoning system. Here's what they are, why they evolved, and how they work.

The Iowa Gambling Task tested whether gut feelings guide choices. How the four-deck card game works, what it showed, and why scientists still argue about it.

Peter Wason's 1966 four-card puzzle stumps most people. Learn the correct answer, why we choose wrong, and what content effects reveal about human reasoning.

Classical economics assumed humans make rational decisions that maximize their self-interest. Then Daniel Kahneman and Amos Tversky spent decades documenting where that fails, and in which direction. Their work changed how governments design policies, how companies sell products, and how researchers think about money.

Classical economics assumed humans make rational decisions. Behavioral science spent 50 years proving that assumption spectacularly wrong.

Your brain takes shortcuts that helped ancestors survive — but those same shortcuts now distort your judgment in dangerous ways.