Wason selection task

About this app

E, K, 7, 4 — which cards must you turn over to test the rule? The classic confirmation bias, plus the everyday scenario (beer/cola/16/22) that almost everyone solves correctly.

Subject: Data & decisions

More from Data & decisions

• Anchoring effect
• Benford's law
• Berkson's paradox
• Cherry-picking: base period
• Cherry-picking: base period 2.0
• The three-cowboy duel (truel)
• The three-cowboy duel 2.0
• The three means

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