1. Purchasing Power Parities - Measurement and Uses
- Author:
- Paul Schreyer and Francette Koechlin
- Publication Date:
- 03-2002
- Content Type:
- Policy Brief
- Institution:
- The Organisation for Economic Co-operation and Development
- Abstract:
- How does one compare economic data between countries that is expressed in units of national currency? And in particular, how should measures of production and Gross Domestic Product (GDP) be converted into a common unit? One answer to this question is to use market exchange rates. While straightforward, this turns out to be an unsatisfactory solution for many purposes – primarily because exchange rates reflect so many more influences than the direct price comparisons that are required to make volume comparisons. Purchasing Power Parities (PPPs) provide such a price comparison and this is the rationale for the work of the OECD and other international organisations in this field (see chart 1). The OECD publishes new sets of benchmark PPPs every three years, drawing on detailed international price comparisons. Every time a new set of benchmark PPPs is released, this also gives rise to a new set of international comparisons of levels of GDP and economic welfare.
- Topic:
- Economics and Political Economy