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The Wason selection task (or four-card problem) is a logic puzzle devised by Peter Cathcart Wason in 1966. [1] [2] [3] It is one of the most famous tasks in the study of deductive reasoning. [4] An example of the puzzle is: You are shown a set of four cards placed on a table, each of which has a number on one side and a color on the other.
Wason created the Selection Task, also known as the 4-card task, in 1966. In this task, participants were exposed to four cards on a table, and given a rule by the experimenter. The participants were then told to choose just cards to determine whether the rule given to them by the experimenter was true or false.
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English: Wason selection task. Which card(s) must be turned over to show that if a card shows an even number on one face, then its opposite face is blue? Shows 4 cards: ones labelled '3' and '8', a blue card and a red card.
Download as PDF; Printable version ... Wason also used confirmation bias to explain the results of his selection task experiment. ... in Wason's rule discovery task ...
This requires a different selection answer, as the 8, brown, and red cards must be turned over to guarantee equivalence. It is an implication in the article text: "if a card shows an even number on one face, then its opposite face shows a primary colour" The subtlety of implication is much of the point of the Wason selection task.
The Wason selection task provides evidence for the matching bias. [15] The test is designed as a measure of a person's logical thinking ability. [50] Performance on the Wason Selection Task is sensitive to the content and context with which it is presented. If you introduce a negative component into the conditional statement of the Wason ...
Print/export Download as PDF; ... Has natural selection shaped how humans reason? Studies with the Wason selection task," Cognition, 31, ...