I show that undervaluation of the currency (a high real exchange rate) stimulates economic growth. This is true particularly for developing countries. This finding is robust to using different measures of the real exchange rate and different estimation techniques. I also provide some evidence that the operative channel is the size of the tradable sector (especially industry). These results suggest that tradables suffer disproportionately from the government or market failures that keep poor countries from converging toward countries with higher incomes. I present two categories of explanations for why this may be so, the first focusing on institutional weaknesses, and the second on product-market failures. A formal model elucidates the linkages between the real exchange rate and the rate of economic growth.

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The Real Exchange Rate and Economic Growth

We examine the impact of liquidity shocks by exploiting cross-bank liquidity variation induced by unanticipated nuclear tests in Pakistan. We show that for the same firm borrowing from two different banks, its loan from the bank experiencing a 1 percent larger decline in liquidity drops by an additional 0.6 percent. While banks pass their liquidity shocks on to firms, large firms-particularly those with strong business or political ties-completely compensate this loss by additional borrowing through the credit market. Small firms are unable to do so and face large drops in overall borrowing and increased financial distress.

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Tracing the Impact of Bank Liquidity Shocks: Evidence from an Emerging Market

The recent wave of financial globalization since the mid-1980s has been marked by a surge in capital flows among industrial countries and, more notably, between industrial and developing countries. While these capital flows have been associated with high growth rates in some developing countries, a number of countries have experienced periodic collapse in growth rates and significant financial crises over the same period, crises that have exacted a serious toll in terms of macroeconomic and social costs. As a result, an intense debate has emerged in both academic and policy circles on the effects of financial integration for developing economies. But much of the debate has been based on only casual and limited empirical evidence.

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Effects of Financial Globalization on Developing Countries: Some Empirical Evidence

This paper exploits product-level U. S. import data to test trade theory. Although the United States increasingly sources the same products from both high- and low-wage countries, unit values within products vary systematically with exporter relative factor endowments and exporter production techniques. These facts reject factor-proportions specialization across products but are consistent with such specialization within products. The data are inconsistent with new trade theory models predicting an inverse relationship between price and producer productivity. The existence of within-product specialization is an important consideration for understanding the impact of globalization on firms and workers, the evolution of total factor productivity, and the likelihood of long-run income convergence.

Across-Product Versus Within-Product Specialization in International Trade

The ability of a two-sector model to quantify the contribution of the housing market to business fluctuations is investigated using U.S. data and Bayesian methods. The estimated model, which contains nominal and real rigidities and collateral constraints, displays the following features: first, a large fraction of the upward trend in real housing prices over the last 40 years can be accounted for by slow technological progress in the housing sector; second, residential investment and housing prices are very sensitive to monetary policy and housing demand shocks; third, the wealth effects from housing on consumption are positive and significant, and have become more important over time. The structural nature of the model allows identifying and quantifying the sources of fluctuations in house prices and residential investment and measuring the contribution of housing booms and busts to business cycles.

/pdf/housing-market-spillovers-evidence-from-an-estimated-dsge-cw32z51gvs.pdf

Housing Market Spillovers: Evidence from an Estimated DSGE Model

This paper studies the evolution of sectoral concentration in relation to the level of per capita income. We show that various measures of sectoral concentration follow a U-shaped pattern across a wide variety of data sources: countries first diversify, in the sense that economic activity is spread more equally across sectors, but there exists, relatively late in the development process, a point at which they start specializing again. We discuss this finding in light of existing theories of trade and growth, which generally predict a monotonic relationship between income and diversification.

Stages of Diversification

I investigate the determinants of business cycle synchronization across regions. The linkages between trade in goods, financial openness, specialization, and business cycle synchronization are evaluated in the context of a system of simultaneous equations. The main results are as follows. (i) Specialization patterns have a sizable effect on business cycles. Most of this effect is independent of trade or financial policy, but directly reflects differences in GDP per capita. (ii) A variety of measures of financial integration suggest that economic regions with strong financial links are significantly more synchronized, even though they also tend to be more specialized. (iii) The estimated role of trade is closer to that implied by existing models once intra-industry trade is held constant. The results obtain in a variety of data sets, measurement strategies, and specifications. They relate to a recent strand of international business cycle models with incomplete markets and transport costs and, on the empir...

Trade, finance, specialization, and synchronization

We show the importance of a dynamic aggregation bias in accounting for the PPP puzzle. We prove that the aggregate real exchange rate is persistent because its components have heterogeneous dynamics. Established time series and panel methods fail to control for this. Using Eurostat data, we find that when heterogeneity is taken into account, the estimated persistence of real exchange rates falls dramatically. Its half-life, for instance, may fall to as low as eleven months, significantly below the "consensus view" of three to five years.

/pdf/ppp-strikes-back-aggregation-and-the-real-exchange-rate-qt33iwlpci.pdf

PPP Strikes Back: Aggregation And the Real Exchange Rate

http://www.jeanimbs.com/papers2_files/CIS_JIEversion.pdf

The dynamics of trade and competition

The paper investigates the determinants of business cycles synchronization across regions It uses both international and intranational data to evaluate the linkages between trade in goods, trade in financial assets, specialization and business cycles synchronization using a system of simultaneous equations The results are as follows: (i) Simultaneity is important, as both trade and financial openness have a direct and an indirect effect on cycle synchronization (ii) A variety of alternative measures of financial integration suggest that regions with strong financial links are significantly more synchronized, though they are also more specialized (iii) Specialization patterns have a sizable effect on business cycles, beyond their reflection of intra-industry trade, and of openness to goods and assets trade (iv) The estimated role of trade is in line with existing models once intra-industry trade is controlled for The results relate to a recent strand of international business cycle models with incomplete markets and transport costs, and, on the empirical side, point to an important omission in the usual criteria defining an optimal currency area, namely specialization patterns

Jean Imbs

Papers

Stages of Diversification

Trade, finance, specialization, and synchronization

PPP Strikes Back: Aggregation And the Real Exchange Rate

The dynamics of trade and competition

Trade, Finance, Specialization and Synchronization