Why does the base rate appear to be ignored? The equiprobability hypothesis.


The base rate fallacy has been considered to result from people's tendency to ignore the base rates given in tasks. In the present article, we note a particular, common structure of the tasks (the imbalanced probability structure) in which the fallacy is often observed. The equiprobability hypothesis explains the mechanism that produces the fallacy. This… (More)
DOI: 10.3758/PBR.16.6.1065

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