An open economy general equilibrium model with heterogeneous producers, a homothetic utility function and endogenous elasticity

Recent monopolistic competition models have identified three main sources of the gains from trade: (1) the introduction of new varieties for consumers, (2) an improvement in efficiency through the exit of low-productivity firms, and (3) a reduction in firms’ markups through import competition. In this paper, we extend Feenstra (Economics Letters, 78(1):79–86, 2003) to develop a model with producers heterogeneous in productivity to capture these gains. Here, firm markups are decreasing with market share, and trade introduces new varieties to consumers and reduces the market share of domestic firms. This reduces markups and profits and forces low-productivity firms to exit. This pro-competitive effect on the distribution of productivity contrasts with the conventional export-driven mechanism in a constant elasticity setup. We can usefully extend this model for further study because of the homotheticity of the utility function and the tractability of the model.     

“Love for variety,” outside option and extensive margin of demand

The paper models a uniform-price Bertrand-price-competition in a differentiated product oligopoly market, where the buyers' preference shows “love for variety.” The buyers differ from each other in their valuation of the differentiated product with a common outside option available to all. The model endogenously determines both the extensive and intensive margin of demand and the equilibrium number of varieties in the differentiated product market. It shows that in such a framework complementarity exists at the extensive margin of demand even in the presence of demand substitutability between the varieties. The results apply to the competition between brick and mortar shops and malls.     

The Small Open-Economy New Keynesian Phillips Curve: Empirical Evidence and Implied Inflation Dynamics

In this paper we apply GMM estimation to assess the relevance of domestic versus external determinants of CPI inflation dynamics in a sample of OECD countries typically classified as open economies. The analysis is based on a variant of the small open-economy New Keynesian Phillips Curve derived in Galí and Monacelli (Rev Econ Stud 72:707–734, 2005), where the novel feature is that expectations about fluctuations in the terms of trade enter explicitly. For most countries in our sample the expected relative change in the terms of trade emerges as the more relevant inflation driver than the contemporaneous domestic output gap.     

Episodic Nonlinearity in Leading Global Currencies

We perform non-linearity tests using daily data for leading currencies that include the Australian dollar, British pound, Brazilian real, Canadian dollar, euro, Japanese yen, Mexican peso, and the Swiss franc to resolve the issue of whether these currencies are driven by fundamentals or exogenous shocks to the global economy. In particular, we use a new method of testing for linear and nonlinear lead/lag relationships between time series, introduced by Brooks and Hinich (J Empir Finance 20:385–404, 1999), based on the concepts of cross-correlation and cross-bicorrelation. Our evidence points to a relatively rare episodic nonlinearity within and across foreign exchange rates. We also test the validity of specifying ARCH-type error structures for foreign exchange rates. In doing so, we estimate Bollerslev’s (J Econom 31:307–327, 1986) generalized ARCH (GARCH) model and Nelson’s (1988) exponential GARCH (EGARCH) model, using a variety of error densities [including the normal, the Student-t distribution, and the Generalized Error Distribution (GED)] and a comprehensive set of diagnostic checks. We apply the Brooks and Hinich (1999) nonlinearity test to the standardized residuals of the optimal GARCH/EGARCH model for each exchange rate series and show that the nonlinearity in the exchange rates is not due to ARCH-type effects. This result has important implications for the interpretation of the recent voluminous literature which attempts to model financial asset returns using this family of models.     

How much have been the export products changed from homogeneous to differentiated? Evidence from China, Japan, and Korea

Many international trade theories and evidence suggest that trade in homogeneous and differentiated goods is different, and trade performance depends significantly on the extent of product differentiation. First this paper classifies the three countries' export products using Rauch's [Rauch, J. (1999). Networks versus markets in international trade. Journal of International Economics, 48, 7–35] classification scheme. This paper suggests a sophisticated technique to obtain the extent of product differentiation in a country's export, implied by Dixit and Stiglitz [Dixit, A., & Stiglitz, J. (1977). Monopolistic competition and optimum product variety. The American Economic Review, 67, 297–308] model in which the smaller is the elasticity of substitution between varieties the greater is the extent of product differentiation. This is an attempt to identify the extent of product differentiation in each country's export basket by estimates of the elasticity of substitution. The estimated elasticities of substitution vary across countries. The most interesting empirical finding is that the China's export structure has been rapidly shaped into differentiated products. However the extent of product differentiation in Japan and Korea's exports has relatively less varied.     

Do excessive wage increases raise imports?: Theory and evidence

This paper uses a model of trade in vertically differentiated products to examine the effects of “excessive wage” increases (i.e. above productivity) on the volume of commodity imports. The model predicts that if the domestic country has comparative advantage in producing high quality varieties of some products, then “excessive wage” increases may result in a decrease in the volume of imports for these products. The empirical validity of the model's predictions is demonstrated with the use of disaggregated Japanese import data for the period 1967–1995. We also find that the aggregate volume of Japanese imports is not responsive to “excessive wage” changes.     

Effects of Imported Intermediate Varieties on Plant Total Factor Productivity and Product Switching: Evidence from Korean Manufacturing

By utilizing previously unexplored plant–product data on Korean manufacturing, and detailed import data for 1991–1998, this paper empirically investigates whether greater access to imported intermediate varieties enhanced plant total factor productivity and product‐switching behavior. First, consistent with previous empirical studies, we find that a plant that belonged to industries with higher imported intermediate variety growth experienced higher productivity growth. Second, our empirical results suggest that increased imported intermediate varieties stimulated the product‐switching behavior of domestic plants. Because product‐switching behavior (i.e. simultaneously adding and dropping products) could be understood as a part of the continual process of ‘creative destruction’ within plants, our results imply that imported intermediate variety growth may be one of the channels through which resource reallocation within plants can be promoted.     

On the choice of an anchor for the GCC currency: does the symmetry of shocks extend to both the oil and the non-oil sectors?

This paper assesses the costs of forming a monetary union among the Gulf Cooperation Council (GCC) countries by looking at economic linkages within the GCC, and between the GCC and the potential anchors (the US, and major European countries such as France, Germany and Italy) for their proposed new currency. We investigate the importance of the US dollar compared to the Euro by focusing on aggregate demand (AD) and aggregate supply (AS) shock symmetry across these countries. We differentiated between oil and non-oil sector by estimating structural vector autoregression (SVAR) models with a combination of variables: oil output, non-oil output, total output, nominal/real price of oil and overall price level. One set of models was identified with the long-run restrictions of Blanchard and Quah (Am Econ Rev 79(4):655–673, 1989), whereas the set that assesses the robustness of the findings was estimated with the short-run restrictions of Sims (Eur Econ Rev 36(5):975–1000, 1992). We find overwhelming support for AD shock symmetry across the GCC countries and between the GCC and the US, but none for the major European countries with the GCC. Non-oil AS shocks are mostly asymmetric, but oil AS shocks are mostly symmetric when the real price of oil is included. This agrees with the view that GCC countries are subjected to common oil shocks. It also suggests that previous VAR models estimated to pass judgment on the feasibility of monetary union across GCC countries may have suffered from problems of mis-specification if the real price of oil was not considered. We surmise that the US dollar is a better anchor candidate for anchoring the new GCC currency than the Euro, since US monetary policy can at least help smooth demand shocks in these countries.     

Strategic Interactions Among Central Bank and National Fiscal Authorities in a Monetary Union Subject to Asymmetric Country Shocks

In this paper we extend Nordhaus’ (Brookings Pap Econ Act (2):139–199, 1994) results to an environment which may represent the current European situation, characterised by a single monetary authority and several fiscal bodies. We show that, even assuming that the monetary and the fiscal authorities share the same ideal targets, in the presence of asymmetric shocks the “symbiosis” result found by Dixit and Lambertini (J Int Econ 60:235–247, 2003) no longer obtains. Thus, fiscal rules as those envisaged in the Maastricht Treaty and in the Stability and Growth Pact may work as monetary/fiscal coordination devices that improve welfare. The imposition of common targets, however, may work as a substitute for policy coordination only if these are made state contingent, an aspect that the recent version of the Stability and Growth Pact takes into account in a more appropriate way than its original version.

The Costs of Increasing Transparency

In their seminal paper, Morris and Shin (Amer Econ Rev 92(5): 1521–1534, 2002a) argued that increasing the precision of public information is not always beneficial to social welfare. Svensson (Amer Econ Rev 96: 448–451, 2006) however has disputed this by saying that although feasible, the conditions for which this was true, were not all that likely. In that respect, therefore, increasing ‘transparency’ remains most of the times beneficial to social welfare. In this paper, we extend the Morris and Shin attempt by setting it up as an explicit interactive game between the Central Bank, the objectives of which we model explicitly, and the private sector. We show that in the absence of costs, both players benefit from transparency in the manner described previously in the literature, and point the differences in their gains. Following that, we then introduce the fact that increasing transparency comes at some costs and show how both players face incentives to free ride on each other as a result. The presence of costs thus alters the way in which greater transparency is attained.

Comments on R. Cooper, M. Bordo and H. James: Exchange rate arrangements and disarrangements: prospects for a world currency

This note evaluates the prospects for a world currency, using as a departure point the papers by Bordo and James (2006) and Cooper (2006). The note argues that a world currency is unlikely in the foreseeable future and probably undesirable. Although more evidence is needed, there seem to be no strong forces towards the creation of new monetary unions among the countries with major currencies or between those countries and the periphery. Based on recent experience, the note also argues that one of the main benefits to establish a world currency, the elimination of exchange rate uncertainty, is likely less important than commonly believed. No matter how rigid a currency arrangement is, initiatives to dissolve it tend to appear as bad times arise. Still, the present equilibrium of no world currency leaves unresolved many difficult issues related to the functioning of the domestic and international monetary systems. Sergio L. Schmukler has prepared this note as a comment to the papers “Proposal for an OECD Currency” by Richard N. Cooper and “One World Money, Then and Now” by Michael Bordo and Harold James, presented at the conference “Regional and International Currency Arrangements,” February 24 and 25, 2006, Vienna, Austria, organized by the Bank of Greece and the Oesterreichische Nationalbank (Central Bank of Austria). I thank conference participants for useful comments. I am also grateful to Jose Azar and Francisco Ceballos for excellent research assistance. The views expressed in this paper are entirely those of the author and do not necessarily represent the opinion of the World Bank.     

More is More: Some Economics of Distinctively-Named White Kids

Using data covering every child born in California from 1961 to 2000, Fryer and Levitt (2004) find that in the 1960s, the differences in name choices by blacks and whites were relatively small, but that a profound shift began among blacks in the mid-1970s toward more distinctively black names, especially among blacks in racially isolated neighborhoods. As an extension of Fryer and Levitt (2004), this study uses data on the names of about 1,300 white children born over the four-year period from 1997 to 2000 and living in a segment of a Metropolitan Statistical Area in the Deep South, and finds that use of combination first names—largely based on combinations of single names included among the names of high-end white children from Fryer and Levitt (2004) and Levitt and Dubner (2005)—is significantly more prevalent among high-end white children than it is among low-end white children. Unlike the data described in Fryer and Levitt (2004), which support an Identity Model wherein distinctively black names result from the Black Power movement that encouraged blacks to “accentuate and affirm black culture and fight the claims of black inferiority,” the present study suggests that high-end parents may use the combination first name convention to increase the likelihood of the child’s future success in various partnership markets, such as dating, marriage and business-partnership markets.     

FDI,Education, and Economic Growth: Quality Matters

In this paper, we revisit the results from the influential study by Borensztein et al. (Journal of International Economics 45:115–135, 1998), which argues that inward foreign direct investment (FDI) promotes the economic growth in a less developed host country only when the host country obtains a threshold level of secondary schooling. Borensztein et al. (Journal of International Economics 45:115–135, 1998) only focus on the quantity of education. We take into consideration both the quantity and the quality of education. We adjust the original schooling data in Borensztein et al. (Journal of International Economics 45:115–135, 1998) by two quality of education indices and re-estimate their model. We find that the complementarity between inward FDI and schooling still exists, but the threshold level of schooling in our study is lower than the threshold calculated in Borensztein et al. (Journal of International Economics 45:115–135, 1998). Our results support the importance of education quality and suggest that with improved quality of education, it does not take as much quantity of schooling, as established in Borensztein et al. (Journal of International Economics 45:115–135, 1998), for inward FDI to have a positive impact on economic growth in the host country.     

UK External Imbalances and the Sterling: Are they on a Sustainable Path?

An updated version of Krugman’s 1993 MMF framework is used to consider the implications of buoyant domestic demand for the real exchange rate and debt dynamics. The updating includes a Taylor rule for monetary policy and explicit treatment of external assets and liabilities. In response to an exogenous rise in the aggregate demand, short-run appreciation of the real exchange rate is followed by a prolonged decline as external debt accumulates and net wealth deteriorates. Whether in equilibrium the real exchange rate is stronger or weaker depends crucially on a comparison of real interest rates and the growth rate. If the domestic growth rate is higher than global real interest rates, the currency may strengthen in the long run despite the deterioration of net external assets. To see whether the strength of sterling is sustainable, the analysis is briefly calibrated to UK data over the last decade. Blanchard et al. (The US current account and the dollar. CEPR DP no 4888, 2005) suggest that international liabilities to be treated as imperfect substitutes: so we check to see how this would affect our results.

Boosting the Employment Rate of Older Men and Women

European countries need to expand employment among older individuals. Many papers have examined this issue from different angles. However, very few seem to have considered its gender dimension properly, despite evidence that lifting the overall senior employment rate requires significantly raising that of women older than 50. The key issue examined by this paper is whether employers are willing to employ more older workers, in particular older women. The answer depends to a large extent on the ratio of older individuals’ productivity to their cost to employers. To address this question we tap into a unique firm-level panel of Belgian data to produce robust evidence on the causal effect of age/gender on productivity and labour costs. We take advantage of the panel structure to identify age/gender-related differences from within-firm variation. Moreover, inspired by recent developments in the production function estimation literature, we address the problem of endogeneity of the age/gender mix, using a structural production function estimator (Olley and Pakes in Econometrica 64(6):1263–1297, 1996; Levinsohn and Petrin in Rev Econ Stud 70(2):317–341, 2003) alongside IV-GMM methods where lagged value of labour inputs are used as instruments. Our results indicate a small negative impact of larger shares of older men on the productivity-labour cost ratio. An increment of 10%-points of in their share causes a 0.17–0.69%-point contraction. However, the main result is that the equivalent handicap with older women is larger, ranging from 1.3 to 2.0%-points. This is not good news for older women’s employability. And the vast services industry does not seem to offer working conditions that mitigate older women’s disadvantage, on the contrary.     

Endogenous Lobbying and Protection under Monopolistic Competition

Abstract

This paper studies the “Protection for Sale” model in the setting of monopolistic competition drawing on the quadratic sub-utility model. This model generates two new findings: (1) the average cross-price elasticity, in particular, only among foreign varieties in a sector negatively influences the level of protection; (2) the total number of domestic varieties over one of the foreign varieties in a sector, a new proxy for political power of domestic lobby groups in that sector, positively influences the level of protection.     

The Foreign Exchange Rate Exposure of Nations

Following the well-known approach by Adler and Dumas (Financ Manage 13(2):41–50, 1984), we evaluate the foreign exchange rate exposure of nations. Results based on data from 27 countries show that national foreign exchange rate exposures are significantly related to the current account and financial account balance variables of corresponding economies.     

The Lack of International Consumption Risk Sharing: Can Inflation Differentials and Trading Costs Help Explain the Puzzle?

The bulk of evidence on the lack of international risk sharing is based on regressions of idiosyncratic consumption growth on idiosyncratic output growth. This paper argues that the results from such regressions obtained from international data are, however, not directly comparable to those based on regional data: the standard practice of running such regressions on international data fails to account for persistent international differentials in consumer prices, whereas—implicitly—most of the literature based on regional data has accounted for these differences. When risk sharing regressions are set up in conceptually the same way in international and regional data sets, the estimated coefficients are also very similar. To explore this result further, we adapt the variance decomposition of Asdrubali et al. (Q J Econ 111:1081–1110, 1996) to allow for deviations from purchasing power parity across countries. While quantity (income and credit) flows are the dominant channel of risk sharing among regions, relative consumption and output price (internal terms of trade) fluctuations account for the bulk of the deviation from the complete markets outcome in international data. To the extent that persistent differences in consumer prices are an indication of goods market segmentation, our findings provide empirical evidence for the proposition by Obstfeld and Rogoff (NBER Macroeconomics Annual 2000, 2000) that segmented international goods markets rather than asset market incompleteness may account for the (apparent) lack of risk sharing between countries.

Labor market deregulation and globalization: empirical evidence from OECD countries

This paper empirically investigates the influence of globalization on various aspects of labor market deregulation. I employ the data set by Bassanini and Duval (2006) on labor market institutions in OECD countries and the KOF index of globalization. The data set covers 20 OECD countries in the 1982–2003 period. The results suggest that globalization did neither influence the unemployment replacement rate, the unemployment benefit length, public expenditures on ALMP, the tax wedge, union density nor overall employment protection. In contrast, protection of regular employment contracts was diminished when globalization was proceeding rapidly. In fact, domestic aspects, such as unemployment and government ideology are more important determinants of labor market institutions and deregulation processes in OECD countries than globalization. For this reason, working conditions of unskilled workers are not likely to deteriorate and the jobs of unskilled workers are not likely to disappear in the course of globalization. All this is, of course, not to insinuate that globalization has any benign influence on labor market institutions.     

Pollution,Factor Ownerships,and Emission Taxes

This paper employs Cournot’s (1838) model of complementary goods to analyze the optimal emission taxation under joint and independent ownership with pollution. When the marginal damage is small (large), an emission taxation is unnecessary (necessary), because the quantity (environmental) distortion is more serious than the environmental (quantity) distortion. This finding has never been presented in the literature. In contrast to Cournot (1838), a striking result is that independent ownership may be welfare superior to joint ownership when the marginal damage of externality is large in the absence of governmental intervention.