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Betting on Machina's reflection example : an Experiment on Ambiguity

Author

Listed:
  • Olivier L'Haridon

    (GREGH - Groupement de Recherche et d'Etudes en Gestion à HEC - HEC Paris - Ecole des Hautes Etudes Commerciales - CNRS - Centre National de la Recherche Scientifique)

  • Laetitia Placido

    (GREGH - Groupement de Recherche et d'Etudes en Gestion à HEC - HEC Paris - Ecole des Hautes Etudes Commerciales - CNRS - Centre National de la Recherche Scientifique)

Abstract

In a recent paper, Machina (2008) suggested choice problems in the spirit of Ellsberg (1961) which challenge tail-separability, an implication of Choquet Expected Utility (CEU) to a similar extent as the Ellsberg paradox challenged the sure-thing principle implied by Subjective Expected Utility (SEU). We have tested choice behavior for bets on one of Machina's choice problems, the reflection example. Our results indicate that tail-separability is violated by a large majority of subjects (over 70% of the sample). These empirical findings complement the theoretical analysis of Machina (2008) and, together, they confirm the need for new approaches in the analysis of ambiguity for decision making.

Suggested Citation

  • Olivier L'Haridon & Laetitia Placido, 2008. "Betting on Machina's reflection example : an Experiment on Ambiguity," Working Papers hal-00580032, HAL.
    • Handle: RePEc:hal:wpaper:hal-00580032
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    References listed on IDEAS

    as
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    More about this item

    Keywords

    Ambiguity; Choquet Expected Utility; Experimental Economics;
    All these keywords.

    JEL classification:

    • C90 - Mathematical and Quantitative Methods - - Design of Experiments - - - General
    • D81 - Microeconomics - - Information, Knowledge, and Uncertainty - - - Criteria for Decision-Making under Risk and Uncertainty

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