This paper analyzes portfolio diversification, leverage, and financial contagion. It studies the extent to which basic principles of portfolio diversification explain “contagious selling” of financial assets when there are purely local shocks. The paper demonstrates that the elementary portfolio theory offers key insights into “contagion.” Most important, portfolio diversification and leverage are sufficient to explain why an investor will find it optimal to significantly reduce all risky asset positions when an adverse shock impacts just one asset.

This paper discusses the origins of the pyramid schemes and the way the authorities handled them. The paper analyzes the economic effects of the pyramid schemes, concluding that despite the descent into anarchy triggered by the schemes’ collapse, their direct effects on the economy are difficult to specify and appear to have been limited. The paper also argues that prevention of pyramid schemes is better than cure and that government and international financial institutions should be vigilant in clamping down on frauds.

This paper provides an overview of the recent theoretical and empirical research on herd behavior in financial markets. It looks at what precisely is meant by herding, the causes of herd behavior, the success of existing studies in identifying the phenomenon, and the effect that herding has on financial markets. The paper also surveys a selected number of studies that evaluated the demand for money using the error-correction model approach in the 1990s across a range of industrial and developing countries.

This paper presents a broad overview of postwar analytical thinking on international macroeconomics, culminating in a more detailed discussion of recent progress. The paper reviews important empirical evidence that has inspired alternative modeling approaches, as well as theoretical and policy considerations behind developments in the field. The paper presents an empirical study of fiscal policy in countries with extreme monetary regimes. It also examines members of multilateral currency unions, dollarized countries that officially use the money of another country, and countries using currency boards.

This paper analyzes the link between product variety and economic growth. It finds support for the hypothesis that a greater degree of product variety relative to the United States helps to explain relative per capita GDP levels. The paper presents an empirical study for South Africa, which indicates that there exists a stable money demand type of relationship among domestic prices, broad money, real income, and interest rates, as well as a long-term relationship among domestic prices, foreign prices, and the nominal exchange rate.

This special issue brings together world-renowned experts to provide a systematic and critical analysis of the costs and benefits of financial globalization. Contributors include Kenneth Rogoff, Maurice Obstfeld, Dani Rodrik, and Frederic S. Mishkin.

Studies of the impact of trade openness on growth are based either on crosscountry analysis—which lacks transparency—or case studies—which lack statistical rigor. This paper applies a transparent econometric method drawn from the treatment evaluation literature (matching estimators) to make the comparison between treated (that is, open) and control (that is, closed) countries explicit while remaining within a statistical framework. Matching estimators highlight that common cross-country evidence is based on rather far-fetched country comparisons, which stem from the lack of common support of treated and control countries in the covariate space. The paper therefore advocates paying more attention to appropriate sample restriction in crosscountry macro research.

This paper empirically investigates the monetary impact of banking crises in Chile, Colombia, Denmark, Japan, Kenya, Malaysia, and Uruguay during 1975–98. Cointegration analysis and error correction modeling are used to research two issues: (i) whether money demand stability is threatened by banking crises; and (ii) whether crises lead to structural breaks in the relation between monetary indicators and prices. Overall, no systematic evidence that banking crises cause money demand instability is found. The paper also analyzes inflation targeting in the context of the IMF-supported adjustment programs.

This is the 2004 (Volume 51) Special Issue of IMF Staff Papers, which includes 6 selected papers (from more than 20) that were presented at the IMF's Fourth Annual Research Conference, November 6-7, 2003.

This paper explores how fiscal policy can affect medium- to long-term growth. It identifies the main channels through which fiscal policy can influence growth and distills practical lessons for policymakers. The particular mix of policy measures, however, will depend on country-specific conditions, capacities, and preferences. The paper draws on the Fund’s extensive technical assistance on fiscal reforms as well as several analytical studies, including a novel approach for country studies, a statistical analysis of growth accelerations following fiscal reforms, and simulations of an endogenous growth model.