Conditional reasoning and the Wason selection task: Biconditional interpretation instead of reasoning bias

@article{WagnerEgger2007ConditionalRA,
  title={Conditional reasoning and the Wason selection task: Biconditional interpretation instead of reasoning bias},
  author={Pascal Wagner-Egger},
  journal={Thinking \& Reasoning},
  year={2007},
  volume={13},
  pages={484 - 505}
}
Two experiments were conducted to show that the IF … THEN … rules used in the different versions of Wason's (1966) selection task are not psychologically—though they are logically—equivalent. Some of these rules are considered by the participants as strict logical conditionals, whereas others are interpreted as expressing a biconditional relationship. A deductive task was used jointly with the selection task to show that the original abstract rule is quite ambiguous in this respect, contrary to… 

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