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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.
In 1960 Wason developed the first of many tasks he would devise to reveal the failures of human reasoning. The "2-4-6" task was the first experiment that showed people to be illogical and irrational. In this study, subjects were told that the experimenter had a rule in mind that only applied to sets of threes.
In Peter Wason's initial experiment published in 1960 (which does not mention the term "confirmation bias"), he repeatedly challenged participants to identify a rule applying to triples of numbers. They were told that (2,4,6) fits the rule. They generated triples, and the experimenter told them whether each triple conformed to the rule. [3]: 179
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 ...
The key with the Wason selection task is that we can re-phrase the task and ensure that nearly 100 % of the students get the question correct. In particular, you set up 4 tables at a bar: One where every body is old, one where everybody is young, one where no one is drinking alcohol, and one where there are lots of beers.
The THOG problem is one of cognitive psychologist Peter Wason's logic puzzles, constructed to show some of the weaknesses in human thinking. You are shown four symbols a black square; a white square; a black circle; a white circle; and told by the experimenter "I have picked one colour (black or white) and one shape (square or circle).
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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.