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Une méta-analyse de l’impact des subventions sur le prix mondial du coton

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  • David Guerreiro

    (EconomiX - EconomiX - UPN - Université Paris Nanterre - CNRS - Centre National de la Recherche Scientifique)

Abstract

Malgré le nombre relativement important d'études sur les impacts des subventions sur le prix mondial du coton, il n'existe pas de consensus concernant la quantification de ces effets. L'objectif de cet article est, par le biais de la méta-analyse, d'expliquer la source de l'hétérogénéité de ces résultats, de donner des indications quant aux variables à inclure afin de modéliser la dynamique du prix mondial, mais aussi de présenter le chiffrage des effets des subventions qu'apporte notre méta-analyse. Nous montrons que les principales sources de variations entre les études se trouvent dans les valeurs retenues pour les élasticités de l'offre et la demande, dans le montant retenu pour les subventions, ainsi que dans la prise en compte (ou non) de certains caractères indispensables. Une modélisation appropriée requiert ainsi une estimation précise des élasticités et la prise en compte de certains facteurs constitutifs du prix mondial du coton tels que les niveaux de stocks ou le prix du polyester.

Suggested Citation

  • David Guerreiro, 2009. "Une méta-analyse de l’impact des subventions sur le prix mondial du coton," Working Papers hal-04140843, HAL.
    • Handle: RePEc:hal:wpaper:hal-04140843
    Note: View the original document on HAL open archive server: https://hal.science/hal-04140843
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    References listed on IDEAS

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