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Beyond Belief: Logic In Multiple Attitudes

Franz Dietrich, Antonios Staras and Robert Sugden
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Antonios Staras: Cardiff University

Université Paris1 Panthéon-Sorbonne (Post-Print and Working Papers) from HAL

Abstract: Logical models of the mind focus on beliefs, and how one reasons with beliefs. But we also have desires, intentions, preferences, and other attitudes-and arguably we reason with them, particularly when making decisions. To enable a logical analysis of someone's psychology and decision-making, we generalize three classic logical desiderata on beliefs -- consistency, completeness, and implication-closedness -- towards multiple attitudes. The three resulting 'logical' desiderata on our psychology contrast with the classic notion of 'rationality requirements': requirements of having transitive preferences, non-contradictory beliefs, non-acratic intentions, intentions consistent with preferences, and so on. We prove a theorem that connects the logical desiderata to rationality requirements: each of the three logical desiderata (generalized to multiple attitudes) is equivalent to the satisfaction of a certain class of rationality requirements. This result connects logic with choice theory and psychology, and has implications for whether reasoning can make our attitudes consistent, complete, and closed.

Date: 2020-01-08
New Economics Papers: this item is included in nep-mic
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Working Paper: Beyond Belief: Logic in Multiple Attitudes (2020) Downloads
Working Paper: Beyond Belief: Logic In Multiple Attitudes (2020) Downloads
Working Paper: Beyond Belief: Logic in multiple attitudes (2020) Downloads
Working Paper: Beyond Belief: Logic in Multiple Attitudes (2020) Downloads
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