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1. Using purchasing power parities to compare countries: Strengths and shortcomings

Author:
Patrick Honohan
Publication Date:
12-2020
Content Type:
Policy Brief
Institution:
Peterson Institute for International Economics
Abstract:
Good international economic policy requires good comparative data on national economic performance. In May 2020, the World Bank published the latest comprehensive update of purchasing power parities (PPPs), as part of the International Comparison Program. Produced for 176 countries, these PPPs are used to convert data (especially GDP and other quantities based on national income accounts) from national currencies to a common basis in a way that is meaningful for economic analysis. PPP-adjusted data are essential because the distortions caused by sharp exchange rate movements are significant, especially for times of macroeconomic turbulence. The newly released PPP data contain fewer surprises than those published in previous updates and are an invaluable tool, but Honohan explains why PPPs should be used with caution and an understanding of their limitations. Apart from removing distortions caused by market exchange rate movements, PPPs remove the impact of other factors affecting relative prices, especially productivity differences, which Honohan argues should not be removed if one wishes to compare the overall economic size or strength of a country or region. Adjusting for productivity, he finds that the United States retains its position as the world’s largest economy for the time being, and the European Union (even without the United Kingdom) is just ahead of China.
Topic:
World Bank, Economic Growth, Currency, Data, and Productivity
Political Geography:
China, Europe, and United States of America

2. Global E-Commerce Talks Stumble on Data Issues, Privacy, and More

Author:
Gary Clyde Hufbauer and Zhiyaou (Lucy) Lu
Publication Date:
10-2019
Content Type:
Policy Brief
Institution:
Peterson Institute for International Economics
Abstract:
In early 2019, several important members of the World Trade Organization (WTO) submitted noteworthy proposals in a realm of international commerce that has evolved faster than rules to govern it: e-commerce or digital trade. While countries agree on less controversial subjects like banning unsolicited commercial electronic messages, the three leading WTO members—China, the European Union, and the United States—have big differences in their approaches to more challenging issues: data flows, data localization, privacy invasions by data collectors, transfer of source code, imposition of customs duties and internet taxes, and internet censorship. Their differing viewpoints lead Hufbauer and Lu to conclude that the prospect of reaching a high-level WTO e-commerce agreement is not promising. To reach an agreement, either most of the contentious issues must be dropped or the number of participating countries must be sharply reduced. A WTO accord, even of low ambition, would have value if only to establish basic digital norms on matters such as banning unsolicited commercial messages and protecting online consumers from fraudulent practices. A more ambitious accord covering the controversial issues should be negotiated in bilateral and/or plurilateral/regional pacts rather than in the WTO.
Topic:
Economics, World Trade Organization, Finance, Privacy, and Data
Political Geography:
China, Europe, Asia, North America, United States of America, and European Union