Shortest IQ test created by Yale professor has only 3 questions

The world's shortest IQ test not only reveals your intelligence but also your level of patience.

The test, called a Cognitive Reflection Test (), consists of three math-based questions that target a person's ability to ignore their initial gut response in favor of a more rational thought process.

are simple, but the Yale University professor who created the exam warned it isn't as straightforward as it may seem.

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