The disjunction effect (Tversky & Shafir, 1992) occurs when decision makers prefer option x (versus y) when knowing that event A occurs and also when knowing that event A does not occur, but they refuse x (or prefer y) when not knowing whether or not A occurs. This form of incoherence violates Savage's (1954) sure-thing principle, one of the basic axioms of the rational theory of decision making. The phenomenon was attributed to a lack of clear reasons for accepting an option (x) when subjects are under uncertainty. Through a pragmatic analysis of the task and a consequent reformulation of it, we show that the effect does not depend on the presence of uncertainty, but on the introduction of non-relevant goals into the text problem, in both the well-known Gamble problem and the Hawaii problem. © 2006 Psychology Press Ltd.

Bagassi, M., Macchi, L. (2006). Pragmatic Approach to Decision Making under Uncertainty: the Case of the Disjunction Effect. THINKING AND REASONING, 12(3), 329-350 [10.1080/13546780500375663].

Pragmatic Approach to Decision Making under Uncertainty: the Case of the Disjunction Effect

BAGASSI, MARIA;MACCHI, LAURA
2006

Abstract

The disjunction effect (Tversky & Shafir, 1992) occurs when decision makers prefer option x (versus y) when knowing that event A occurs and also when knowing that event A does not occur, but they refuse x (or prefer y) when not knowing whether or not A occurs. This form of incoherence violates Savage's (1954) sure-thing principle, one of the basic axioms of the rational theory of decision making. The phenomenon was attributed to a lack of clear reasons for accepting an option (x) when subjects are under uncertainty. Through a pragmatic analysis of the task and a consequent reformulation of it, we show that the effect does not depend on the presence of uncertainty, but on the introduction of non-relevant goals into the text problem, in both the well-known Gamble problem and the Hawaii problem. © 2006 Psychology Press Ltd.
Articolo in rivista - Articolo scientifico
Decision making, Disjunction Effect
English
2006
12
3
329
350
none
Bagassi, M., Macchi, L. (2006). Pragmatic Approach to Decision Making under Uncertainty: the Case of the Disjunction Effect. THINKING AND REASONING, 12(3), 329-350 [10.1080/13546780500375663].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/5849
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