Social Psychology Network

Maintained by Scott Plous, Wesleyan University

The Famous Four Card Task

Suppose each card has a number on one side and a letter on the other. Which of these cards are worth turning over if you want to know whether the statement below is false?
Card with A Card with D
Card with 4 Card with 7

"If a card has a vowel on one side,
then it has an even number on the other side."

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