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The value of information under ambiguity: a theoretical and experimental study on pest management in agriculture

Author

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  • Stéphane Couture

    (University of Toulouse, INRAE, UR 875 Applied Mathematics and Computer Science laboratory)

  • Stéphane Lemarié

    (Univ. Grenoble Alpes, INRAE, CNRS, Grenoble INP, GAEL)

  • Sabrina Teyssier

    (Univ. Grenoble Alpes, INRAE, CNRS, Grenoble INP, GAEL)

  • Pascal Toquebeuf

    (Univ. Grenoble Alpes, CNRS, INRAE, Grenoble INP, GAEL)

Abstract

This article addresses the value of information that affects the ambiguity faced by a decision maker. Our analysis is applied to the case of a farmer whose production can be damaged by a pest attack with unknown probability, this damage being reduced if the farmer decides to use a pesticide. Early warning systems have precisely been implemented in many countries to help farmers avoid inappropriate decisions in terms of pesticide use. We investigate, both theoretically and experimentally, how farmers value these systems. We propose a two-state self-insurance model in which an $$\alpha$$ α -MaxMin Expected Utility farmer may use pesticides that reduce the loss in the accident state while incurring a cost in both states. Her decision to self-insure or not depends on risk and ambiguity attitudes. We compile and compare the value of two types of information leading to a reduction of ambiguity and analyze their properties with respect to ambiguity attitude. Both types of information are valued positively if the farmer is ambiguity averse. We conduct a framed field experiment in which farmers and agricultural students have to decide whether or not to apply pesticides depending on risk, ambiguity and the associated monetary gains resulting from pesticide cost. The experimental findings support the theory. The average value of information among all participants is between €0.9/ha and €3.3/ha depending on the information gain.

Suggested Citation

  • Stéphane Couture & Stéphane Lemarié & Sabrina Teyssier & Pascal Toquebeuf, 2024. "The value of information under ambiguity: a theoretical and experimental study on pest management in agriculture," Theory and Decision, Springer, vol. 96(1), pages 19-47, February.
    • Handle: RePEc:kap:theord:v:96:y:2024:i:1:d:10.1007_s11238-023-09942-y
    DOI: 10.1007/s11238-023-09942-y
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    References listed on IDEAS

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