Beyond the home market effect: Market size and specialization in a multi-country world

The standard two-country model of international trade with monopolistic competition predicts a more-than-proportional relationship between a country′s share of world production of a good and its share of world demand for that same good, a result known as the ‘home market effect’. We first show that this prediction does not generally carry through to the multi-country case, as production patterns are crucially affected by third country effects. We then derive an alternative prediction that holds whatever the number of countries considered. This new prediction takes into account important features of the real world such as comparative advantage due to cross-country technological differences and lack of factor price equalization.     

Market size and tax competition

With international externalities, different country sizes, imperfect competition, and trade costs, tax competition for mobile firms is efficiency-enhancing with respect to the free market outcome. Under both scenarios, the resulting inefficiencies in international specialization and trade flows vanish when trade costs are low enough. Otherwise, only international tax coordination can implement the efficient spatial distribution of firms.     

Market potential, increasing returns and geographic concentration

In this paper, I examine the spatial correlation between wages and consumer purchasing power across U.S. counties to see whether regional demand linkages contribute to spatial agglomeration. First, I estimate a simple market-potential function, in which wages are associated with proximity to consumer markets. Second, I estimate an augmented market-potential function derived from the Krugman model of economic geography, parameter estimates for which reflect the importance of scale economies and transport costs. The estimation results suggest that demand linkages between regions are strong and growing over time, but quite limited in geographic scope.     

Trade policy: Home market effect versus terms-of-trade externality

We study trade policy in a two-sector Krugman (1980) trade model, allowing for wage, import and export subsidies/taxes. We study non-cooperative trade policies, first for each individual instrument and then for the situation where all instruments can be set simultaneously, and contrast those with the efficient allocation. We show that in this general context there are four motives for non-cooperative trade policies: the correction of monopolistic distortions; the terms-of-trade manipulation; the delocation motive for protection (home market effect); the fiscal-burden-shifting motive. The Nash equilibrium when all instruments are available is characterized by first-best-level wage subsidies, and inefficient import subsidies and export taxes, which aim at relocating firms to the other economy and improving terms of trade. Thus, the dominating incentives for non-cooperative trade policies are the fiscal-burden-shifting motives and terms-of-trade effects.     

Cross-border mergers and market concentration in a vertically related industry: theory and evidence

We present a tractable model of oligopoly to identify the linkages between local competition and cross-border mergers in a vertically related industry. We show that the incentives for cross-border mergers rise with vertical integration in an industry when the premerger concentration in that industry is sufficiently high relative to the concentration in the same industry in a foreign country. We also show that the incentives for a merger between a foreign firm and a vertically integrated home firm will be higher than that for a merger between a foreign firm and a disintegrated home firm, when the premerger concentration at home is low relative to the premerger concentration in the foreign country. We then analyze a firm-level panel of 90,614 M&A observations, between 1990 and 2012, from 86 countries. Logistic regressions confirm that market concentration is an important determinant of cross-border M&A. Our results support the conjectures of our theoretical model and are consistent with recent empirical findings and theoretical predictions.     

Power laws in firm size and openness to trade: Measurement and implications

Existing estimates of power laws in firm size typically ignore the impact of international trade. Using a simple theoretical framework, we show that international trade systematically affects the distribution of firm size: the power law exponent among exporting firms should be strictly lower in absolute value than the power law exponent among non-exporting firms. We use a dataset of French firms to demonstrate that this prediction is strongly supported by the data, both for the economy as a whole and at the industry level. Furthermore, the differences between power law coefficients for exporters and non-exporters are larger in sectors that are more open to trade. While estimates of power law exponents have been used to pin down parameters in theoretical and quantitative models, our analysis implies that the existing estimates are systematically lower than the true values. We propose two simple ways of estimating power law parameters that take explicit account of exporting behavior.     

Trade policy in a “super size me” world

When a foreign monopolist sets a single market clearing price for its product, the sign of the optimal tariff is determined by the extent of pass through (also known as the terms of trade effect). However, when a foreign monopolist employs a second degree price discrimination mechanism in the domestic market the calculus of welfare maximization is very different. While there are still terms of trade effects from the imposition of a tariff, the existence of such effects are neither necessary nor sufficient to determine the sign of the optimal tariff. Instead the distribution of valuations within the population is the key determinant of the nature of policy intervention. This result differs significantly from the uniform price case and is driven by the incentive compatibility constraint which places the distribution of types at the center of the analysis. If there is a relatively large fraction of high valuation types in the population, then domestic information rents may be increased by subsidizing imports thereby increasing the consumption of the low valuation types and moving the incentive constraint in favor of the high valuation types. However, if the share of high types in the population is relatively small then the increase in information rents will also be small but the fiscal implications of a subsidy will be large. Consequently, the optimal policy will be to impose a trade tax.     

Rethinking the area approach: Immigrants and the labor market in California

A framework that uses a Constant Elasticity of Substitution (CES) production function with skill differentiation and integrated national labor markets has predictions for the employment effect of immigrants at the local level. The employment (rather than wage) response to immigration by skill in a state reveals the production substitutability-complementarity between native and immigrant labor. This, in turn, reveals the degree to which immigrants stimulate or depress the demand for native labor. To estimate this elasticity, I use a novel instrument based on demographic characteristics of total Central American migrants or of the Mexican Population to predict immigration by skill level within California. Looking at immigration to California between 1960 and 2005 these estimates support the assumption of a nationally integrated labor market by skill and they support the hypothesis that natives and immigrants in the same education-experience group are not perfectly substitutable. This explains the counter-intuitive fact that there is a zero correlation between immigration and wage and employment outcomes of natives in the state.     

Transportation, freight rates, and economic geography

We investigate the role of competitive transport markets in shaping the location of economic activity and the pattern of trade. In our model, carriers supply transport services for shipping manufactured goods, and freight rates are set to clear transport markets. Each carrier must commit to the maximum capacity for a round-trip and thus faces a logistics problem as there are opportunity costs of returning empty. These costs increase the freight rates charged to firms located in regions that are net exporters of manufactured goods. Since demand for transport services depends on the spatial distribution of economic activity, the concentration of production in one region raises freight rates to serve foreign markets from there, thus working against specialization and the agglomeration of firms. Consequently, a more even spatial distribution of firms and production prevails at equilibrium when freight rates are endogenously determined than when they are assumed to be exogenous as in the literature.     

Trade and industrial location with heterogeneous labor

It is shown in the context of a new economic geography model that when labor is heterogeneous trade liberalization may lead to industrial agglomeration and inter-regional trade. Labor heterogeneity gives local monopsony power to firms but also introduces variations in the quality of the job match. Matches are likely to be better when there are more firms and workers in the local market, giving rise to an agglomeration force which can offset the forces against, trade costs and the erosion of monopsony power. A robust agglomeration equilibrium is derived analytically and its properties illustrated with numerical simulations.     

Firm heterogeneity and the structure of U.S. multinational activity

We use firm-level data for U.S. multinational enterprises (MNEs) and the model of firm heterogeneity presented in Helpman, Melitz, and Yeaple [Helpman, E., Melitz, M., Yeaple, S., 2004. Exports versus FDI with heterogeneous firms. The American Economic Review 94 (1), 300-316.] to make four empirical contributions. First, we show that the most productive U.S. firms invest in a larger number of foreign countries and sell more in each country in which they operate. Second, we assess the importance of firm heterogeneity in the structure of MNE activity. Third, we use the model to identify the mechanisms through which country characteristics affect the structure of MNE activity. Finally, we assess the model's shortcomings in order to inform the development of new theory.     

Capital, technology, and specialization in the neoclassical model

The paper studies the effects of technology and capital stock on trade using simulation. For this purpose, the paper develops and evaluates a model that is distinguished by its use of the Eaton-Kortum framework to explain intra-industry trade instead of the usual Armington assumption. It is found that the magnitudes and in many cases signs of the effects of capital stock and technology on specialization are very country-specific. This implies that the regression studies that estimate cross-country average effects have limited value. Looking at the volume of trade, the paper finds that capital endowments and industry-level comparative advantages have little effect on the volume of trade — the reduced inter-industry trade between more similar countries is compensated by increased intra-industry trade. Producer heterogeneity, on the other hand, has a significant effect on the volume of trade. The paper evaluates the accuracy of the model's forecasts by performing historical simulations for 1975-95, with the results showing that the model's predictions are accurate.     

The effect of WTO on the extensive and the intensive margins of trade

We use 6-digit bilateral trade data to document the effect of WTO/GATT membership on the extensive and intensive product margins of trade. We construct gravity equations for the two product margins motivated by Chaney (2008). The empirical results show that standard gravity variables provide good explanatory power for bilateral trade on both margins. Importantly, we show that the impact of the WTO is concentrated almost exclusively on the extensive product margin of trade, i.e. trade in goods that were not previously traded. In our preferred specification, WTO membership increases the extensive margin of exports by 25%. At the same time, WTO membership has a negative impact on the intensive margin. Based on novel comparative statics results about how fixed and variable trade costs impact the product margins of trade, our results suggest that WTO membership works by reducing primarily the fixed rather than the variable costs of trade.     

Foreign direct investment and growth under economic integration

This paper studies foreign direct investment (FDI) and economic growth in a two-country endogenous growth model. Starting with a core-periphery steady state in the world, the model shows that economic integration gives rise to FDI, leads to an expansion of R&D activity in the industrial core, and increases the world growth rate. In that process, the peripheral country enjoys a rise in the level of living standards. The model suggests that the often-observed positive correlation between inward FDI and economic growth does not necessarily imply any causal relationship—both of them respond endogenously to economic integration.     

local industrial systems and the location of FDI in Italy

This article investigates the determinants of foreign direct investment (FDI) location across Italian provinces. Specifically it examines the relationship between industry‐specific local industrial systems and the location of inward FDI. This extends previous analysis beyond the mere density of activity, to illustrate the importance of the specific nature of agglomerations in attracting inward investment. The article develops a model of FDI location choice using a unique FDI database stratified by industry and province. The results also suggest that the importance of agglomeration differs between industries, and offers some explanation for this.     

Intraindustry trade and the skill premium: Theory and evidence

We explore theoretically and empirically the relationship between intraindustry trade and the skill premium. Our model features a Chamberlinian-type mechanism of income distribution based on quasi-homothetic consumer preferences, non-homothetic production, and factor-biased scale economies at the firm level. The analysis focuses on a two-country, one-sector model of intraindustry trade with two factor inputs consisting of high-skilled and low-skilled labor. We find that a move from autarky to free trade (a) raises the output of the representative firm and its level of total factor productivity, and (b) reduces (raises) the relative wage of high-skilled workers under the hypothesis of output-skill substitutability (output-skill complementarity). Plant-level evidence from Mexico supports the empirical relevance of the proposed income-distribution mechanism.     

Does home market size matter for the pattern of trade?

Does home market size matter for the pattern of trade? Krugman started the literature, showing it does matter. Davis overturned his result, arguing that an assumption of convenience—transport costs only for the differentiated goods—conveniently obtained the result. Here we relax another persistent assumption of convenience—two industry types differentiated only by the degree of scale economies—and find that market size reemerges as a relevant force in determining industrial structure.     

Monetary autonomy in emerging market economies: The role of foreign reserves

This paper examines trends in monetary autonomy and their interactions with financial integration, currency regimes and foreign reserves for recent decades in emerging Asian and Latin American economies. Our main findings are the following: First, most emerging Asian economies have increased monetary autonomy mainly due to changes in currency regimes toward floating regimes, while emerging Latin American economies have shown mixed results on monetary autonomy. Second, in all sample economies, the accumulation of foreign reserves has contributed to retaining monetary autonomy, probably implying the role of foreign reserves as an anchor for monetary autonomy in emerging market economies.     

Trade policy under firm-level heterogeneity in a small economy

We explore the effect of trade policy on productivity and welfare in the now standard model of firm-level heterogeneity and product differentiation with monopolistic competition. To obtain sharp results, we restrict attention to an economy that takes as given the price of imports and the demand schedules for its exports (a “small economy”). We first establish that welfare can be decomposed into four terms: productivity, terms of trade, variety and curvature, where the last is a term that captures heterogeneity across varieties. We then show how a consumption subsidy, an export tax, or an import tariff allows our small economy to deal with two distortions that we identify and thereby reach its first-best allocation. We also show that an export subsidy generates an increase in productivity, but given the negative joint effect on the other three terms (terms of trade, variety, and curvature), welfare falls. In contrast, an import tariff improves welfare in spite of the fact that productivity falls.     

Export prices,selection into exporting and market size: Evidence from China and India

This paper empirically analyses the export pricing behaviour of Chinese and Indian exporters when there is selection into exporting. Previous exchange rate pass-through estimates that did not take selection into account could be biased if selection into exporting is correlated with pricing strategy. We use 6-digit product-level data across high- and low-income export destinations over the period 1994–2007 and assess a number of determinants of the degree of pass-through of exchange rates to export prices, such as the level of external demand, exporter’s wage cost, degree of competition in export markets, currency volatility and the direction of currency movements. We find systematic differences in the pricing strategies of Chinese and Indian exporters while uncovering a selection bias in exports to high-income markets, although the pricing of exports to low-income markets is independent of the decision to export. Export prices do not increase systematically with the destination market per capita income, and tend to be less sensitive in shipments to advanced nations. Export prices of India are sensitive to the volatility of the trade-weighted nominal effective exchange rate (NEER), indicating heterogeneity in prices to maintain competitiveness, but not in China as volatility is insignificant given a fixed currency system. It is also revealed that a country with a relatively flexible currency regime and arms-length trade such as India is more likely to exhibit incomplete pass-through, whereas a country with an inflexible currency system and involved in outward processing trade is more likely to have full pass-through as shown in the case of China.