Heteroskedasticity biases tests for contagion based on correlation coefficients. When contagion is defined as a significant increase in market comovement after a shock to one country, previous work suggests contagion occurred during recent crises. This paper shows that correlation coefficients are conditional on market volatility. Under certain assumptions, it is possible to adjust for this bias. Using this adjustment, there was virtually no increase in unconditional correlation coefficients~i.e., no contagion! during the 1997 Asian crisis, 1994 Mexican devaluation, and 1987 U.S. market crash. There is a high level of market comovement in all periods, however, which we call interdependence.

This paper challenges the current belief that income inequality has a negative relationship with economic growth. It uses an improved data set on income inequality which not only reduces measurement error, but also allows estimation via a panel technique. Panel estimation makes it possible to control for time-invariant country-specific effects, therefore eliminating a potential source of omitted-variable bias. Results suggest that in the short and medium term, an increase in a country's level of income inequality has a significant positive relationship with subsequent economic growth. This relationship is highly robust across samples, variable definitions, and model specifications. (JEL O40, O15, E25)

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Thanks to Rudiger Dornbusch, Andrew Rose, Jaume Ventura, and seminar participants at MIT, Dartmouth, and NYU for helpful comments and suggestions. All remaining errors are our own.. The views expressed herein are those of the authors and not necessarily those of the National Bureau of Economic Research.

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This paper tests if real and financial linkages between countries can explain why movements in the world's largest markets often have such large effects on other financial markets, and how these cross-market linkages have changed over time. It estimates a factor model in which a country's market returns are determined by: global, sectoral, and cross-country factors (returns in large financial markets), and country-specific effects. Then it uses a new data set on bilateral linkages between the world's 5 largest economies and about 40 other markets to decompose the cross-country factor loadings into: direct trade flows, competition in third markets, bank lending, and foreign direct investment. Estimates suggest that both cross-country and sectoral factors are important determinants of stock and bond returns, and that the U.S. factor has recently gained importance, while the Japanese and U.K. factors have lost importance. From 1996-2000, real and financial linkages became more important determinants of how shocks are transmitted from large economies to other markets. In particular, bilateral trade flows are large and significant determinants of crosscountry linkages in both stock and bond markets. Bilateral foreign investment is usually insignificant. Therefore, despite the recent growth in global financial flows, direct trade still appears to be the most important determinant of how movements in the world's largest markets affect financial markets around the globe.

This paper analyzes waves in international capital flows. We develop a new methodology for identifying episodes of extreme capital flow movements using data that differentiates activity by foreigners and domestics. We identify episodes of "surges" and "stops" (sharp increases and decreases, respectively, of gross inflows) and "flight" and "retrenchment" (sharp increases and decreases, respectively, of gross outflows). Our approach yields fundamentally different results than the previous literature that used measures of net flows. Global factors, especially global risk, are significantly associated with extreme capital flow episodes. Contagion, whether through trade, banking, or geography, is also associated with stop and retrenchment episodes. Domestic macroeconomic characteristics are generally less important, and we find little association between capital controls and the probability of having surges or stops driven by foreign capital flows. The results provide insights for different theoretical approaches explaining crises and capital flow volatility.

This paper examines how financial constraints and product market exposures determine the response of multinational and local firms to sharp depreciations. U.S. multinational affiliates increase sales, assets, and investment significantly more than local firms during, and subsequent to, depreciations. The results indicate that product market exposures offer an incomplete explanation for this relative performance as multinational affiliates exclusively serving local markets and those with similar operating exposures as local firms expand operations considerably more than local firms. A differential ability to circumvent financial constraints contributes significantly to the observed differential investment performance. Investment specifications illustrate that increases in leverage induced by sharp depreciations constrain local firms from capitalizing on profitable investment opportunities but do not constrain multinational affiliates. Multinational affiliates also access parent equity when local firms are the most constrained. These results indicate another role for foreign direct investment in emerging marketsmultinational affiliates expand economic activity during currency crises when local firms are most constrained.