Revisiting the consumption-real exchange rate anomaly in a model with non-traded goods

This paper shows that the assumption used in many two-country business cycle models that all non-traded goods are nondurable consumption goods magnifies the severity of the consumption-real exchange rate anomaly, which is the discrepancy between the high correlation between relative consumption and the real exchange rate predicted by most models and the low correlation observed empirically. This assumption hampers the ability to generate wealth effects necessary for the economies to deviate away from full risk-sharing. Using an alternative setup in which non-traded goods can also be investment goods improves the ability of the model to generate wealth effects, and therefore to overcome the anomaly.     

Government Expenditures and Economic Growth: The Supply and Demand Sides*

This paper uses a new approach to estimate how government expenditures affect the growth rate of real GDP. They affect the growth rate through three channels ‐ total factor productivity, investment and aggregate demand. We find that apart from government investment, all government expenditures have negative marginal effects on productivity and GDP growth. In particular, a 1 percentage point increase in the share of government consumption in GDP reduces the equilibrium GDP growth rate by 0.216 percentage points, while the same increase in government investment raises the growth rate by 0.167 percentage points. This suggests that a reallocation of 1 percentage point of government consumption to government investment can raise the growth rate by 0.38 percentage points.     

Exchange rate volatility and productivity growth: The role of financial development

The vast empirical exchange rate literature finds the effect of exchange rate volatility on real activity to be small or insignificant. In contrast, this paper offers empirical evidence that real exchange rate volatility can have a significant impact on productivity growth. However, the effect depends critically on a country's level of financial development. The results appear robust to time window, alternative measures of financial development and exchange rate volatility, and outliers. We also offer a simple monetary growth model in which real exchange rate uncertainty exacerbates the negative investment effects of domestic credit market constraints.     

Convergence,capital accumulation and the nominal exchange rate

This paper develops a flexible price, two-sector growth model with a nominal side to study the role of the exchange rate in transition dynamics. We adopt a standard small open economy model with traded and nontraded goods, where the engines of growth are exogenous productivity improvements and capital accumulation. We enhance this standard framework by adding a preference for real money holdings, captured by money-in-the-utility. We follow Schmitt-Grohé and Uribe (2003) and assume that the interest rate on bonds issued by the small open economy is debt-dependent, and interpret it as a simple financial friction. We show analytically that the choice of the exchange rate regime influences the transition dynamics of a small open economy through the balance sheet of the central bank. We then calibrate the model to explore the quantitative significance of our results. We find that the choice of the exchange rate regime has significant and lasting effects on prices, consumption, investment and sectoral allocations, and the composition of financial assets.     

Consumption,government spending,and the real exchange rate

Using panel structural VAR analysis and quarterly data from four industrialized countries, we document that an increase in government purchases raises output and private consumption, deteriorates the trade balance, and depreciates the real exchange rate. This pattern of comovement poses a puzzle for both neoclassical and Keynesian models. An explanation based on the deep-habit mechanism is proposed. An estimated two-country model with deep-habits is shown to replicate well the observed responses of output, consumption, and the trade balance, and the initial response of the real exchange rate to an estimated government spending shock.     

Understanding the Backus–Smith puzzle: It's the (nominal) exchange rate,stupid

Backus, Kehoe and Kydland (BKK 1992) demonstrated that if international capital markets are complete, consumption growth correlations across countries should be higher than their corresponding output growth correlations. In stark contrast to the theory, however, in actual data the consumption growth correlation is lower than the output growth correlation. By assuming trade imperfections due to non-traded goods, Backus, D.K., Smith, G.W. [1993 Consumption and real exchange rates in dynamic economies with non-traded goods. Journal of International Economics 35(3–4), 297–316] showed that there is an additional impediment at work that can lower the consumption growth correlation. While their argument was successful in partially explaining the puzzlingly low cross country correlation of consumption growth rates, it contributed to generating another puzzle because the data forcefully show that consumption growth is negatively correlated with the real exchange rate, which is also a violation of the theory. Using data for OECD countries, we decompose real exchange rate growth into its nominal exchange rate growth and inflation differential components, and find that nominal exchange rate movements are the main source for the Backus-Smith puzzle. We demonstrate the robustness of this finding by examining sub-samples of the data, by allowing for imperfect risk sharing due to ‘rule of thumb’ consumers, and by examining intranational data across the U.S. states where the nominal exchange rate is fixed.     

Real Exchange Rates and Fundamentals: A Cross‐Country Perspective

This paper employs newly constructed measures for productivity differentials, external imbalances, and commodity terms of trade to estimate a panel cointegrating relationship between real exchange rates and a set of fundamentals for a sample of 48 industrial countries and emerging markets. It finds evidence of a strong positive relation between the consumer price index‐based real exchange rate and commodity terms of trade. The estimated impact of productivity growth differentials between traded and nontraded goods, while statistically significant, is small. Increases in net foreign assets, government consumption, and trade restrictions tend to be associated with appreciating real exchange rates.     

Nominal exchange rate volatility,relative price volatility,and the real exchange rate

We model real exchange rate, nominal exchange rate, and relative price volatility using real and nominal factors. We analyze these volatility measures across developing and industrialized countries. We find that the inclusion of nominal factors achieves a sizable reduction in the real exchange rate volatility spread between developing and industrialized countries. In addition, we find that nominal factors matter to real exchange rate volatility in the short run and the long run, and that for developing countries, a higher share of real exchange rate volatility stems from relative price volatility.     

The introduction of the Euro and its effects on portfolio decisions

Examining investment behavior related to the Euro introduction, we address the relevance of different investment determinants. With the advent of the currency union two potential sources of portfolio reallocation can be distinguished: First, the diminishment of exchange rate risk and transaction costs within the EMU. Second, the increase of correlation of EMU returns so that diversification benefits decreased. We test for structural breaks in the holdings of German investors and estimate a market model to account for the two effects. A significant decrease in national and an increase in EMU and rest-of-the-world investments can be observed. Comparing the observed holdings with benchmark portfolios, we find that investment home bias has diminished since the Euro introduction.     

收入不平等、政府支出与实际汇率——基于跨国面板数据的研究

已有较多研究讨论了实际汇率的决定因素,而从收入不平等角度出发的研究并不多。本文搜集和整理了172个国家和地区1970年到2016年的跨国面板数据,分析了收入不平等对一国实际汇率的影响,并引入政府支出探究了收入分配对非贸易品部门和实际汇率的影响机制。实证检验结果表明,对于非OECD国家,收入不平等和实际汇率显著负相关,即收入越不平等,实际汇率高估越严重,而在OECD国家中这一现象并不存在。进一步的影响机制分析发现,对于非OECD国家,一国收入不平等加剧会导致该国政府支出增多,从而扩大了非贸易品部门规模,导致非贸易品的相对价格上升,使得实际汇率高估。     

Economic convergence and the fundamental equilibrium exchange rate in central and eastern Europe

The paper presents an extended version of the fundamental equilibrium exchange rate model (FEER), which introduces potential output into foreign trade equations. We show that with this specification and under some plausible assumptions the equilibrium exchange rate is consistent with the behavioral equilibrium exchange model (BEER). We use the extended FEER model to analyze fluctuations of the real exchange rate in four central and eastern European countries. The resulting FEER calculations show that the appreciation of the real exchange rates in these countries in the past nine years is largely an equilibrium phenomenon.     

Endogenous pricing to market and financing costs

This paper explains why relative PPP should hold more tightly in emerging markets, and why pricing to market would be observed more frequently in the OECD countries. It studies the endogenous determination of pricing to market, in a real option model with time-dependent transportation costs, where the future terms of trade are random. Allowing time-dependent transportation costs adds a dimension of investment to the pre-buying of imports, implying that financial considerations determine the frequency of pricing to market, and the deviations from relative PPP. If the expected discounted cost of last minute delivery is higher than pre-buying, one exercises the option of spot market imports if the realized terms of trade are favorable enough. Pricing to market is observed in countries characterized by low terms of trade volatility and low financing costs. In these circumstances, imports are pre-bought, and the spot market for imports is inactive. In countries where the financing costs and the terms of trade volatility are high, few imports are pre-bought, the price of imports is determined by the realized real exchange rate, and a version of relative PPP holds. With an intermediate level of terms of trade volatility and of financing costs, a mixed regime is observed. If the realized real exchange rate is weak, pricing to market would prevail, increasing consumers’ welfare by shielding them from the adverse purchasing power consequences of weak terms of trade. If the realized real exchange rate is favorable enough, more imports are purchased in the spot market, and the relative PPP would hold. Higher financing costs increase the cost of pre-buying imports, reducing thereby the frequency of pricing to market, increasing the expected relative price of imports, reducing the expected deviations from relative PPP, and reducing welfare.     

External Constraints on Monetary Policy and the Financial Accelerator

We develop a small open economy macroeconomic model where financial conditions influence aggregate behavior. Our goal is to explore the connection between the exchange rate regime and financial distress. We first show that a calibrated version of the model captures well the behavior of the Korean economy during its financial crisis period of 1997–98. In particular, the model accounts for the sharp increase in lending rates and the large drop in output, employment, investment, and measured productivity. The financial market frictions play an important role, further, explaining roughly half the decline in overall economic activity. We then perform some counterfactual exercises to illustrate how the fixed exchange rate regime likely exacerbated the crisis by tying the hands of monetary policy.     

The Transmission of International Shocks: A Factor-Augmented VAR Approach

The empirical literature on the transmission of international shocks is based on small -scale VARs. In this paper, we use a large panel of data for 17 industrialized countries to investigate the international transmission mechanism, and revisit the anomalies that arise in the empirical literature. We propose a factor augmented VAR (FAVAR) that extends the model in Bernanke, Boivin, and Eliasz (2005) to the open economy. The main results can be summarized as follows. First, the dynamic effects on the UK economy of an unanticipated fall of short-term interest rates in the rest of the world are: real house price inflation, investment, GDP and consumption growth peak after 1 year, wages peak after 2 years, and CPI and GDP deflator inflation peak during the third year. Second, a positive international supply shock makes the distribution of the components of the UK consumption deflator negatively skewed. Third, in response to a domestic monetary shock, we find little evidence of the exchange rate and liquidity puzzles and little evidence of the forward discount and price anomalies.     

Monetary Policy Choices in Emerging Market Economies: The Case of High Productivity Growth

We develop a general equilibrium model of an emerging market economy where productivity growth differentials between tradable and non-tradable sectors result in an equilibrium appreciation of the real exchange rate—the so-called Balassa-Samuelson effect. The paper explores the dynamic properties of this economy and the welfare implications of alternative policy rules. We show that the real exchange rate appreciation limits the range of policy rules that, with a given probability, keep inflation and exchange rate within predetermined numerical targets. We also find that the B–S effect raises by an order of magnitude the welfare loss associated with policy rules that prescribe active exchange rate management.     

Modeling exchange rate passthrough after large devaluations

Large devaluations are generally associated with large declines in real exchange rates. We develop a model which embodies two complementary forces that account for the large declines in the real exchange rate that occur in the aftermath of large devaluations. The first force is sticky nontradable-goods prices. The second force is the impact of real shocks that often accompany large devaluations. We argue that sticky nontradable goods prices generally play an important role in explaining post-devaluation movements in real exchange rates. However, real shocks can sometimes be primary drivers of real exchange-rate movements.     

Expenditure switching versus real exchange rate stabilization: Competing objectives for exchange rate policy

This paper develops a view of exchange rate policy as a trade-off between the desire to smooth fluctuations in real exchange rates so as to reduce distortions in consumption allocations, and the need to allow flexibility in the nominal exchange rate so as to facilitate terms of trade adjustment. We show that optimal nominal exchange rate volatility will reflect these competing objectives. The key determinants of how much the exchange rate should respond to shocks will depend on the extent and source of price stickiness, the elasticity of substitution between home and foreign goods, and the amount of home bias in production. Quantitatively, we find the optimal exchange rate volatility should be significantly less than would be inferred based solely on terms of trade considerations. Moreover, we find that the relationship between price stickiness and optimal exchange rate volatility may be non-monotonic.     

The consumption-real exchange rate anomaly with extensive margins

This paper investigates a consumption-real exchange rate anomaly from the open macroeconomics literature known as the Backus-Smith puzzle. We both analytically and quantitatively examine how an expansion of trade along extensive margins can contribute to the puzzle's resolution. Our argument is based on 1) a wealth effect due to changes in the number of product varieties, 2) statistical inefficiency in measuring the number of product varieties, and 3) market incompleteness. Contrary to complete asset markets which, in general, feature overly strong risk sharing properties, changes in the number of product varieties under incomplete markets may produce a wealth effect under high trade elasticity. Since statistical agencies systematically fail to capture the welfare impact arising from that changes, data-consistent terms of trade and real exchange rates tend to appreciate due to this positive wealth effect. This provides a realistic correlation between data-consistent real exchange rates and consumption.     

Adjustment patterns to commodity terms of trade shocks: The role of exchange rate and international reserves policies

We analyze the way in which Latin American countries have adjusted to commodity terms of trade (CTOT) shocks in the 1970–2007 period. Specifically, we investigate the degree to which the active management of international reserves and exchange rates impacted the transmission of international price shocks to real exchange rates. We find that active reserve management not only lowers the short run impact of CTOT shocks significantly, but also affects the long run adjustment of REER, effectively lowering its volatility. We also show that relatively small increases in the average holdings of reserves by Latin American economies (to levels still well below other emerging regions current averages) would provide a policy tool as effective as a fixed exchange rate regime in insulating the economy from CTOT shocks. Reserve management could be an effective alternative to fiscal or currency policies for relatively trade closed countries and economies with relatively poor institutions or high government debt. Finally, we analyze the effects of active use of reserve accumulation aimed at smoothing REERs. The result support the view that “leaning against the wind” is potent, but more effective when intervening to support weak currencies rather than intervening to slow down the pace of real appreciation. The active reserve management reduces substantially REER volatility.     

Home bias,exchange rate disconnect,and optimal exchange rate policy

This paper examines how much the central bank should adjust the interest rate in response to real exchange rate fluctuations. The paper first demonstrates, in a two-country Dynamic Stochastic General Equilibrium (DSGE) model, that home bias in consumption is important to replicate the exchange rate volatility and exchange rate disconnect documented in the data. When home bias is high, the shock to Uncovered Interest rate Parity (UIP) can substantially drive up exchange rate volatility while leaving the volatility of real macroeconomic variables, such as GDP, almost untouched. The model predicts that the volatility of the real exchange rate relative to that of GDP increases with the extent of home bias. This relation is supported by the data. A second-order accurate solution method is employed to find the optimal operational monetary policy rule. Our model suggests that the monetary authority should not seek to vigorously stabilize exchange rate fluctuations. In particular, when the central bank does not take a strong stance against the inflation rate, exchange rate stabilization may induce substantial welfare loss. The model does not detect welfare gain from international monetary cooperation, which extends Obstfeld and Rogoff's [Obstfeld, M., Rogoff, K.,2002. Global implications of self-oriented national monetary rules, Quarterly Journal of Economics May, 503–535] findings to a DSGE model.