International Finance

This essay written for The New Palgrave dictionary of Ecnomics provides a selective and interpretive account of the development of thought on international financial questions. Attention is focused on the process of international adjustment and on the proper definition of external balance. Since the first descriptions of the price-specie-flow mechanism in Humes time, the definition of external balance has evolved in response to changes in the world economy's structure. The foreign reserve constraint so central under the gold standard or in the early Bretton Woods years is less important under conditions of high international capital mobility. Increasingly, the current account and the national intertemporal budget constraint are emphasized in discussions of international adjustment. In analogy with the idea of a high-employment government budget surplus, a working definition of external balance might be a current account that maintains the highest possible steady consumption level consistent with the economy's expected intertemporal budget constraint. Intertemporal approaches to external balance become more difficult to apply when countries face credit rationing as a result of nonrepayment risk.

Exchange Rates and Adjustment: Perspectives from the New Open Economy Macroeconomics

The New Open Economy Macroeconomics has allowed economists to tackle classical problems with new tools, while also generating new ideas and questions. In their attempts to make the new models capture empirical regularities, researchers have entertained a variety of assumptions about the international pricing of goods, notably, models of pricing to market and destination-currency pricing of exports. Some of the resulting models imply that exchange-rate changes lack international expenditure-switching effects, and they thus appear to call for a radical rethinking of the role of exchange rates in international adjustment. This paper argues that the recent resurgence of exchange-rate pessimism stems from oversimplified modeling strategies rather than from evidence. Like earlier episodes starting with the extreme 'elasticity pessimism' of the early postwar era, it is based on a misinterpretation of the empirical record.

Inflation, Real Interest, and the Determinacy of Equilibrium in an Optimizing Framework

This paper examines the short-run relation between anticipated inflation and the real rate of interest in a model where agents with perfect foresight maximize utility over infinite lifetimes. In addition to deriving behavioral functions from explicit intertemporal optimization, the approach taken here departs from the usual IS-LM analysis in that it is dynamic and deals with a small economy open to trade in consumption goods. Because capital mobility must be ruled out to allow scope for variation in the real interest rate, the results obtained here for one of the two exchange- rate regimes considered -- free floating -- apply equally to a closed economy. The paper shows that an increase in the expected inflation rate depresses the real interest rate in the short run when the exchange rate is instantaneously fixed by the central bank. When equilibrium is determinate in the floating-rate case, the real interest rate is invariant with respect to inflation.

Globalization, Macroeconomic Performance, and the Exchange Rates of Emerging Economies

Among the developing countries of the world, those emerging markets that have sought some degree of integration into world finance are characterized by higher per capita incomes, higher long-run growth rates, and lower output and consumption volatility. These characteristics are more likely to be causes than effects of financial integration. The measurable gains from financial integration appear to be lower for emerging markets than for higher-income countries, and appear to have been limited by recent crises. One factor limiting the gains from financial integration is the difficulty emerging economies face in resolving the open-economy trilemma. Given their structural and institutional features, many emerging economies cannot live comfortably either with fixed or with freely floating exchange rates. Most recently, the exchange rates of several emerging countries display attempts at stabilization punctuated by high volatility in periods of market stress.

America's Deficit, the World's Problem: Keynote Speech

The U.S. deficit in the current account, now running at an annual rate of over US$700 billion, has reached levels (as a percentage of GDP) not seen since the first decades of the 19th century. The deficit is soaking up roughly three-quarters of the world's available external surpluses. If the deficit continues at this pace, the U.S. could ultimately converge to an external debt/GDP ratio around one. Several analyses suggest that a rapid adjustment of the deficit toward balance would require a very sharp real depreciation of the U.S. dollar. This paper reviews the limitations of some optimistic arguments that predict instead a "soft landing" for the dollar. I focus in particular on the view that greater financial globalization allows the United States easily to run much bigger deficits for much longer periods. Some simple calculations based on real interest rate differentials suggest that markets could be underestimating the extent of necessary dollar depreciation.

How Integrated are World Capital Markets? Some New Tests

This paper present some new empirical evidence on the extent of world capital-market integration. The first set of tests carried out uses data from different countries to compare internationally expected marginal rates of substitution between consumption on different dates. If residents of different countries have access to a nominally risk-free bond denominated in dollars, say, their common expected marginal rate of substitution of future for present dollars should equal the gross nominal return on dollar bonds. Tests of the international equality of expected marginal substitution rates yield evidence consistent with a substantial degree of international capital-market integration after, but not before, 1973. These tests are naturally based on a particular model of intertemporal consumption choice, but direct estimation of the inter-country relationships implied by that model lends support to its assumptions. These last findings are relevant to the current debate in macroeconomics about the role of intertemporal substitution. The second set of tests conducted in this paper concerns correlations between countries' saving and investment rates. For a sample often countries, correlations between annual changes in saving and investment rates over the period 1948-1984 look quite similar to those found in quarterly data. Surprisingly, however, the correlation coefficients are often lower before the mid-1960s than afterward This finding throws further doubt on the interpretation of saving-investment correlation coefficients as structural parameters reflecting the response of domestic investment to shifts in national saving.

Speculative Attack and the External Constraint in a Maximizing Model of the Balance of Payments

This paper analyzes inevitable transitions between fixed and floating exchange-rate regimes in a balance-of-payments model where individual preferences are explicitly specified. The goal is to assessthe analogy between speculative attacks in foreign exchange markets and attacks on official price-fixing schemes in natural resource markets. In discrete time the analogy with resource markets is only partially correct, for in a deterministic model the collapse of a fixed rate may be characterized by two, successive attacks. The two-attack equilibriumis peculiar to discrete-time analysis, however. In the continuous-time limit of discrete-time models there is a single attack timed so as to rule out an anticipated discrete jump in the exchange rate.Balance-of-payments models differ from nonrenewable resource models in that foreign exchange reserves may be borrowed from abroad.The paper therefore asks whether there are limits to central-bank borrowing possibilities. In an idealized world where all private incomeis subject to lump-sum taxation, central-bank reserves can become infinitely negative with no violation of the public sector's intertemporal budget constraint. Nonetheless, a growth rate of domestic credit exceeding the world interest rate, if maintained indefinitely, leads to violation of the constraint in the paper's model.

Can We Sterilize? Theory and Evidence

This paper is a highly selective review of our knowledge about the scope for sterilized intervention in foreign exchange markets under alternative exchange-rate regimes. Section I demonstrates the potential importance of simultaneous-equations bias in single-equation econometric studies of the capital-account offset to monetary policy under fixed exchange rates. The empirical record suggests that, in the case of West Germany, sterilization was a feasible short-run monetary strategy in the 1960s. Section II notes that there is considerable recent evidence of imperfect asset substitutability under the managed float. While limited substitution between bonds of different currency denomination is a precondition for the efficacy of sterilized foreign-exchange intervention, it is no guarantee of efficacy. Whether limited substitutability can in fact be exploited in a predictable manner by central banks is a distinct, and unanswered, question.

Implications for the Yen of Japanese Current Account Adjustment

This paper presents a quantitative evaluation of the effect on the yen of some alternative scenarios under which Japan reaches current account balance. The analytical framework is a global general equilibrium model, based closely on Obstfeld and Rogoff (2005a, b), within which relative prices clear the world markets for traded goods as well as the domestic markets for nontraded goods. Depending on assumptions about the critical substitution elasticities underlying the model, the yen could appreciate by as much as 10 percent for each 1 percent of GDP reduction in its current account surplus. The effect would be smaller if substitution elasticities were larger, or if adjustment were accompanied by an expansion of Japanese nontradable output, the latter presumably implied by a return to a more efficient level of labor utilization.Current account adjustment; International capital flows; Japanese yen exchange rate

Lenders of Last Resort in a Globalized World

The recent financial crisis teaches important lessons regarding the lender-of-last resort function. Large swap lines extended in 2007-08 from the Federal Reserve to other central banks show that the classic concept of a national last-resort lender fails to address key vulnerabilities in a globalized financial system with multiple currencies. What system of emergency international financial support will best help to minimize the likelihood of future economic instability? Acting alongside national central banks, the International Monetary Fund has a key role to play in the constellation of lenders of last resort. As the income-level and institutional divergence between emerging and mature economies shrinks over time, the IMF may even evolve into a global last- resort lender that channels central bank liquidity where it is needed. The IMF's effectiveness would be greatly enhanced by several complementary reforms in international financial governance, though some of these appear politically problematic at the present time.Lender of Last Resort, Financial Crisis, Central Banking, International Monetary System, International Monetary Fund