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Les ambiguïtés de la mesure de la puissance économique des États par les parités de pouvoir d’achat

Author

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  • Myriam Donsimoni

    (PACTE - Pacte, Laboratoire de sciences sociales - IEPG - Sciences Po Grenoble - Institut d'études politiques de Grenoble - CNRS - Centre National de la Recherche Scientifique - UGA [2016-2019] - Université Grenoble Alpes [2016-2019])

  • Jacques Fontanel

    (CESICE - Centre d'études sur la sécurité internationale et les coopérations européennes - IEPG - Sciences Po Grenoble - Institut d'études politiques de Grenoble - UGA [2016-2019] - Université Grenoble Alpes [2016-2019])

Abstract

Exchange rates are not satisfactory conversion rates for comparing, in time and space, the GDP of national economies. They undergo brutal speculative variations, the intervention of political powers or the backlash of a loss of confidence of the national currency, justified or not. Purchasing Power Parities (PPPs) are often used to improve international comparisons. According to INSEE, PPPs determine a monetary conversion rate that can express the purchasing power of different national currencies in a common currency (international dollar). In this context, in PPP, China would have become the largest economic power in the world, which is clearly false. This conversion method has important methodological limitations and construction assumptions, notably concerning the choice of a homogenized basket of goods and services, the specific consumption habits of countries and the availability of financial resources dedicated to innovation, investment and quality of national public services into the country.

Suggested Citation

  • Myriam Donsimoni & Jacques Fontanel, 2019. "Les ambiguïtés de la mesure de la puissance économique des États par les parités de pouvoir d’achat," Post-Print hal-01988946, HAL.
    • Handle: RePEc:hal:journl:hal-01988946
    Note: View the original document on HAL open archive server: https://hal.univ-grenoble-alpes.fr/hal-01988946
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    References listed on IDEAS

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    1. Li Lian Ong, 2003. "The Big Mac Index," Palgrave Macmillan Books, Palgrave Macmillan, number 978-0-230-51241-2, September.
    2. Jacques Fontanel & Natalia Sushcheva, 2019. "La puissance des GAFAM," Post-Print hal-02196915, HAL.
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    Cited by:

    1. Jacques Fontanel, 2019. "La mesure comparative de la puissance des Etats par le PIB ou les valeurs économiques," Post-Print hal-02263257, HAL.

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