 | Adams' P-validity in the Research on Human Reasoning
Gernot D Kleiter
The contribution throws a critical light on the application of Adams' probabilistic validity (p-validity) in the research on human reasoning. While Adams introduced ``p-validity'' in probability logic as a surrogate for ``validity'' in classical logic, it has recently been used in psychology as a ``new standard'' to evaluate probabilistic inferences. A major misunderstanding concerns the fact that in the work of Adams the probabilities of the premises are interval probabilities, while in the psychological experiments the participants assess point probabilities. The contribution argues that the coherence approach to probability, that is, the current continuation and extension of the work of de Finetti, is the more fruitful approach to evaluate and model human probabilistic inferences.
March 2018
Received 5 July 2016
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