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Report
The growth of world trade
The growth in the trade share of output is one of the most important features of the world economy since World War II. We show that an important propagation mechanism for this growth is vertical specialization. Simply put, vertical specialization occurs when imported inputs are used to produce goods that are then exported. We show that many of the standard trade models - the Ricardian model, the monopolistic competition model, and the international real business cycle models - cannot explain the growth in trade unless very high elasticities of demand and substitution are assumed. We then use ...
Working Paper
A tale of two states: Maharashtra and West Bengal
In this paper the authors study the economic evolution between 1960 and 1995 of two states in India ? Maharashtra and West Bengal. In 1960, West Bengal?s per capita income exceeded that of Maharashtra. By 1995, it had fallen to just 69 percent of Maharashtra?s per capita income. The authors employ a "wedge" methodology based on the first order conditions of a multi-sector neoclassical growth model to ascertain the sources of the divergent economic performances. Their diagnostic analysis reveals that a large part of West Bengal?s development woes can be attributed to: (a) low sectoral ...
Working Paper
Mobility and Engagement Following the SARS-Cov-2 Outbreak
We develop a Mobility and Engagement Index (MEI) based on a range of mobility metrics from Safegraph geolocation data, and validate the index with mobility data from Google and Unacast. We construct MEIs at the county, MSA, state and nationwide level, and link these measures to indicators of economic activity. According to our measures, the bulk of sheltering-in-place and social disengagement occurred during the week of March 15 and simultaneously across the U.S. At the national peak of the decline in mobility in early April, localities that engaged in a 10% larger decrease in mobility than ...
Journal Article
International trade: why we don’t have more of it
Globalization has led to an enormous increase in international trade. Over the past 40 years, world exports as a share of output have doubled to almost 25 percent of world output. However, despite this enormous increase, economic evidence suggests that significant barriers to international trade still exist. In ?International Trade: Why We Don?t Have More of It,? Edith Ostapik and Kei-Mu Yi summarize the latest developments in the measurement of international trade barriers.
Working Paper
Deindustrialization and Industry Polarization
We add to recent evidence on deindustrialization and document a new pattern: increasing industry polarization over time. We assess whether these new features of structural change can be explained by a dynamic open economy model with two primary driving forces, sector-biased productivity growth and sectoral trade integration. We calibrate the model to the same countries used to document our patterns. We find that sector-biased productivity growth is important for deindustrialization by reducing the relative price of manufacturing to services, and sectoral trade integration is important for ...
Journal Article
China's emergence as a manufacturing juggernaut: Is it overstated?
China's emergence as a manufacturing juggernaut selling so many goods to so many countries has attracted enormous attention from academics, policymakers, and the media. In this article, Behzad Kianian and Kei-Mu Yi put China's manufacturing performance into a broader context. They emphasize two key themes: The wages of China's manufacturing workers are rising rapidly; and China's production of export goods relies heavily on imported inputs and the final exported goods face large mark-ups in their destination markets. The first theme implies that China will lose global market share in some ...
Working Paper
Can multi-stage production explain the home bias in trade?
A large empirical literature finds that there is too little international trade, and too much intra-national trade to be rationalized by observed international trade costs such as tariffs and transport costs. The literature uses frameworks in which goods are assumed to be produced in just one stage. This paper investigates whether the multi-stage nature of production helps explain the home bias in trade. The author shows that multi-stage production magnifies the effects of trade costs. He then calibrates a multi-stage production model to the U.S. and Canada. He solves the model with measures ...
Working Paper
Structural change in an open economy
We study the importance of international trade in structural change. Our framework has both productivity and trade cost shocks, and allows for non-unitary income and substitution elasticities. We calibrate our model to investigate South Korea's structural change between 1971 and 2005. We find that the shock processes, propagated through the model's two main transmission mechanisms, non-homothetic preferences and the open economy, explain virtually all of the evolution of agriculture and services labor shares, and the rising part of the hump-shape in manufacturing. Counterfactual exercises ...
Working Paper
Vertical specialization and the border effect puzzle
A large body of empirical research finds that a pair of regions within a country tends to trade 10 to 20 times as much as an otherwise identical pair of regions across countries. In the context of the standard trade models, the large ?border effect? is problematic, because it is consistent only with high elasticities of substitution between goods and/or high unobserved national border barriers. The author proposes a resolution to this puzzle based on vertical specialization, which occurs when regions or countries specialize only in particular stages of a good?s production sequence. The author ...
Discussion Paper
Real Interest Rates over the Long Run
Long-term interest rates have a crucial influence on virtually all major financial decisions faced by households, businesses and governments. This paper reviews several decades of data on long-term rates internationally, explores several factors that determine them and discusses implications of this evidence. {{p}} The data indicate declining long-term rates since the 1980s, converging internationally at very low levels. This implies that the rate decline is not due to the Great Recession or to the early 2000s downturn. It further suggests a higher likelihood than before of hitting the zero ...