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Suppositions, extensionality, and conditionals : a critique of the mental model theory of Johnson-Laird and Byrne (2002).

Evans, J. S. T. and Over, D. E. and Handley, S. J. (2005) 'Suppositions, extensionality, and conditionals : a critique of the mental model theory of Johnson-Laird and Byrne (2002).', Psychological review., 112 (4). pp. 1040-1052.

Abstract

P. N. Johnson-Laird and R. M. J. Byrne (see record 2002-18225-002) proposed an influential theory of conditionals in which mental models represent logical possibilities and inferences are drawn from the extensions of possibilities that are used to represent conditionals. In this article, the authors argue that the extensional semantics underlying this theory is equivalent to that of the material, truth-functional conditional, at least for what they term "basic" conditionals, concerning arbitrary problem content. On the basis of both logical argument and psychological evidence, the authors propose that this approach is fundamentally mistaken and that conditionals must be viewed within a suppositional theory based on what philosophical logicians call the Ramsey test. The Johnson-Laird and Byrne theory is critically examined with respect to its account of basic conditionals, nonbasic conditionals, and counterfactuals.

Item Type:Article
Keywords:Conditionals, Mental models, Suppositional conditional, Counterfactuals, Probability, Logic, Inference, Deduction, Premises, Thinking, Bias.
Full text:Full text not available from this repository.
Publisher Web site:http://dx.doi.org/10.1037/0033-295X.112.4.1040
Record Created:22 Jan 2009
Last Modified:19 Mar 2010 15:46

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