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Cognitive Reflection Test
Twelve short puzzles that each have an obvious — and wrong — intuitive answer. Take a breath and check your arithmetic. Your score reflects how often you override that gut response with deliberate thought.
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About the Cognitive Reflection Test
The cognitive reflection test was popularized in 2005 as a way to measure whether people pause to check an easy-looking answer. Every question plants a fast, intuitive answer that feels right, that a moment of reflection overturns.
Our 12 questions follow the same pattern but use different numbers and settings, so the test stays fair. You type a number for each question, and we track how many you get right, how often you give the intuitive trap answer, and your average time per question.