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Are Policymakers Ambiguity Averse?

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  • Loïc Berger
  • Valentina Bosetti

Abstract

We investigate the ambiguity preferences of a unique sample of real-life policymakers at the Paris UN climate conference (COP21). We find that policymakers are generally ambiguity averse. Using a simple design, we are moreover able to show that these preferences are not necessarily due to an irrational behaviour, but rather to intrinsic preferences over unknown probabilities. Exploring the heterogeneity within our sample, we also show that the country of origin and the degree of quantitative sophistication affect policymakers' attitudes towards compound risk, but not towards ambiguity. Robustness results are obtained in a lab experiment with a sample of university students.

Suggested Citation

  • Loïc Berger & Valentina Bosetti, 2020. "Are Policymakers Ambiguity Averse?," The Economic Journal, Royal Economic Society, vol. 130(626), pages 331-355.
  • Handle: RePEc:oup:econjl:v:130:y:2020:i:626:p:331-355.
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    Cited by:

    1. Ilke AYDOGAN & Loïc BERGER & Valentina BOSETTI & Ning LIU, 2022. "Three layers of uncertainty," Working Papers 2022-iRisk-01, IESEG School of Management.
    2. Ilke AYDOGAN & Loïc BERGER & Valentina BOSETTI, 2023. "Unraveling Ambiguity Aversion," Working Papers 2023-iRisk-01, IESEG School of Management.
    3. repec:hal:journl:hal-03031751 is not listed on IDEAS
    4. Loïc Berger & Massimo Marinacci, 2020. "Model Uncertainty in Climate Change Economics: A Review and Proposed Framework for Future Research," Environmental & Resource Economics, Springer;European Association of Environmental and Resource Economists, vol. 77(3), pages 475-501, November.
    5. Cabrales, Antonio & Brañas, Pablo & Espinosa, María Paz & Jorrat, Diego, 2022. "The effect of ambiguity in strategic environments: an experiment," CEPR Discussion Papers 17584, C.E.P.R. Discussion Papers.
    6. Marinacci Massimo & Principi Giulio & Stanca Lorenzo, 2023. "Recursive Preferences and Ambiguity Attitudes," Working papers 082, Department of Economics and Statistics (Dipartimento di Scienze Economico-Sociali e Matematico-Statistiche), University of Torino.
    7. Ilke Aydogan & Loïc Berger & Valentina Bosetti, 2023. "Unraveling Ambiguity Aversion," Post-Print hal-04071242, HAL.
    8. Ilke Aydogan & Loïc Berger & Valentina Bosetti & Ning Liu, 2022. "Three layers of uncertainty," Working Papers hal-03031751, HAL.
    9. Wang, Jiarui & Liu, Shancun & Yang, Haijun, 2022. "Institutional investor’ proportions and inactive trading," International Review of Financial Analysis, Elsevier, vol. 82(C).
    10. repec:hal:wpaper:hal-04071242 is not listed on IDEAS
    11. Massimo Marinacci & Giulio Principi & Lorenzo Stanca, 2023. "Recursive Preferences and Ambiguity Attitudes," Carlo Alberto Notebooks 695 JEL Classification: C, Collegio Carlo Alberto.
    12. Massimo Marinacci & Giulio Principi & Lorenzo Stanca, 2023. "Recursive Preferences and Ambiguity Attitudes," Papers 2304.06830, arXiv.org, revised Aug 2023.

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