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Lab 8.docx

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PSYC 2650
Dan Meegan

 Believed that humans always reasoned according to the rules of logic  Became clear that this isn't the case at all  Designed a number of tasks that look simple at first, but are in fact full of traps o Observing the mistakes that people make, we can learn more about how people reason  Wason Selection Task o Based on causal statements such as "If this, then that" (conditional)  Aim of these puzzles is to demonstrate that often people do not reason according to the rules of logic  Shows you that by making mistakes yourself you can get a better understanding of the underlying reasoning processes we all use  Research shows that only 10% of those who try to solve the standard Wason Selection Task (with the E/4 rule) are successful o Percentage rises, though, when abstract tasks (e.g., the card task) become easier to visualize (e.g., the plants puzzle) or allow the subject to factor in familiar experiences (e.g., the alcohol puzzle)  Two errors occur quite often o Confirmation bias  People always look for examples that show that the statement is correct while neglecting to search for counterevidence (e.g., if the 5 card has an E on the other side, this is disconfirming evidence for the "If E on one side, then 4 on the other side" rule) o People think that an "if/then" statement can be turned around without any problem  "If you wash the car, I'll give you $20." An hour later he hands you $20. You might assume that this obligates you to the
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