Wason four cards test


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

visualise the 4 cards:
card 1: A
card 2: B
card 3: 4
card 4: 7

The question: Which card(s) must be flipped over in order to verify that the rule is true for these four cards? Why?



crack ya heads && start thinking CRITICALLY!