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Pragmatically before ecologically valid tasks

Published online by Cambridge University Press:  01 December 1997

Laura Macchi
Laura Macchi
Affiliation:
Istituto di Psicologia, Universit degli Studi di Milano via Larga, 19 20122, Milan, Italylmacchi@imiucca.csi.unimi.it
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Abstract

Most tasks used to demonstrate the base rate fallacy are ambiguous about the independence of the data. The removal of such ambiguities from the texts (by means of a clear reference class for the probabilities) is a necessary condition and has a considerable effect on the use of the base rate in classical probabilistic tasks. Some comments are offered on the frequentist phrasing of such and, more generally, their ecological validity.

Type
Continuing Commentary
Information
Behavioral and Brain Sciences , Volume 20 , Issue 4 , December 1997 , pp. 778 - 779
Copyright
© 1997 Cambridge University Press

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