"The biggest cause of trouble in the world today is that the stupid people are so sure about things and the intelligent folks are so full of doubts."~~Bertrand Russell
 
Home Glossary / Lexicon Glossary A Availability heuristic

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Availability heuristic
Availability heuristic refers to a mental rule of thumb whereby people base a judgment on the ease with which they can bring something to mind. It is often used to make probability estimates, which depends on the frequency with which certain events readily come to mind. This can lead to errors, since, for example, very vivid events will be remembered out of proportion to their actual frequency of occurrence.
 
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