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

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.
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Submitted on : Tuesday, January 22, 2019 - 10:40:05 AM
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Myriam Donsimoni, Jacques Fontanel. Les ambiguïtés de la mesure de la puissance économique des États par les parités de pouvoir d’achat. Annuaire français de relations internationales , Paris : La Documentation française, 2019, XX. ⟨hal-01988946⟩

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