Power laws and comparative advantage

Using a comprehensive international trade data set we document empirical Power Laws (PLs) for the distribution of the interaction between countries as measured by revealed comparative advantage. Using the recently developed estimator by Gabaix and Ibragimov (2011), we find strong evidence in favour of PLs along the time, country and sector dimension for three different levels of data aggregation. This finding is not predicted by any of the existing trade theories. The estimated PL exponents characterizing the distribution of revealed comparative advantage are stable over time but differ between countries and sectors. These differences are related empirically to country and sector characteristics, including population size, Gross Domestic Product (GDP) and factor intensities.     

Access to credit and comparative advantage

Access to external funds is crucial for the entry and expansion of entrepreneurial firms and the sectors they predominantly arise in. This paper reports three important results. First, comparative advantage is shaped by factor endowments as well as fundamental determinants of corporate finance. In particular, a larger equity ratio of firms and tough governance standards relax financing constraints, lead to entry of firms at the lower bound of the productivity distribution and create an endogenous comparative advantage in sectors where entrepreneurial firms are clustered. Second, a small degree of protection in the constrained sector can raise a country's welfare by relaxing financing constraints if terms‐of‐trade effects are small. Third, a small degree of protection of the financially dependent industry in a financially underdeveloped country might even raise world welfare.     

Technology and the dynamics of comparative advantage

This paper explores how trade affects innovation in a two‐country, two‐good, two‐factor Heckscher–Ohlin model with heterogeneous firms. Trade openness induces an increase in process innovation in both industries. The increase is stronger in the comparative advantage industry. Trade openness boosts prospective entrants' profits in that industry, which leads to further increases in product innovation. Trade liberalization generates a different relative impact on innovation across industries, depending on trade costs. When they are high (low), it increases process innovation relatively more in the comparative advantage (disadvantage) industry, leading to TFP divergence (convergence) across industries.     

Breaks in the chain of comparative advantage

The chain proposition of comparative advantage states that when factor prices differ between two countries producing many products with two factors, every export of the capital abundant country would be more capital intensive than any of its imports. The present note points out that an economy has the option to break the chain to reach full employment if its factor endowment is not spanned by the production cone of the more intensive products.     

Poor institutions as a comparative advantage

Classic theories of comparative advantage point to factor productivity and factor abundance as determinants of specialization and trade. Likewise, geography and topography can determine trade patterns. Institutions, however, are increasingly seen as important sources of comparative advantage. A global drug prohibition regime implies that institutional quality matters more than traditional sources in the drug trade. This paper theoretically models trade patterns of illicit goods and confirms the role of institutions empirically with respect to the drug trade. In particular, illicit enterprises gain force in countries where resources are scarce, drug enforcement is uncertain, and institutions are weak in absolute terms and relative to neighboring countries. I propose several policy alternatives that emphasize economic opportunity for the poor and institutional quality that complement drug prohibition.     

Product quality and the theory of comparative advantage

We develop a simple model to investigate the possibility that two countries that differ significantly in income levels may be unable to gain from trading with each other. We consider two countries with identical preferences and different technologies. There are two types of goods: one homogeneous, and one quality-differentiated. We show that if one country has an absolute advantage in both types of goods, then no trade may be possible between the two countries, despite differences in relative autarky prices.     

Some issues in the measurement of comparative advantage

This paper examines measurement of ‘revealed comparative advantage’ in the light of recent evidence that such measures appear to yield poor results and of recent theoretical developments. Evidence is presented that the poor performance of these measures is not likely to be attributable to problems predominantly associated with measurement itself. Recent theoretical developments make clearer what can be expected of observed trade flows. A measure, based on theory's ex antepredictions measures. The behaviour of the measure is evaluated for a sample of UK industries in 1979.     

Clusters and comparative advantage: Implications for industrial policy

Cases of industrial agglomeration or “clusters” arise in the presence of industry-specific and local externalities, also called Marshallian externalities. The standard argument is that such externalities may justify a policy of infant-industry protection to allow and encourage clusters to emerge. In this paper I explore this carefully, and show that different policy implications emerge under a more realistic modeling of clusters. In particular, rather than distorting prices to promote clusters in “advanced sectors” that may exhibit strong clustering possibilities, countries should focus instead on promoting clustering in current sectors, which have revealed to have the strongest comparative advantage. Import substitution is not a proper way to achieve this.     

Property rights,mobile capital,and comparative advantage

Recent papers show that imperfect property rights to a natural resource – a sector-specific factor–can be a source of comparative advantage. In these models, weaker property rights attract labor–the only mobile factor – to the resource sector, increasing the country's comparative advantage for that sector. If capital in addition to labor is mobile, and if the benefits of capital are non-excludable or if the degree of property rights is endogenous, a deterioration of property rights has ambiguous effects on comparative advantage and on the equilibrium wage/rental ratio.     

Advantages of backwardness and forwardness with shifting comparative advantage

This paper develops a multi-sector endogenous innovation model that is able to account for the dynamics of comparative advantage of each sector within the economy. The model in this paper assumes that two kinds of learning effects exist in R&D: advantages of backwardness and forwardness. It is shown that if the economy is divided into advanced and backward sectors, in the latter sectors, the advantage of backwardness dominates, leading to cyclic repetition of comparative advantage. However, in the former sectors, the advantage of forwardness becomes more significant, so comparative advantage among these sectors stabilizes. Thus, the direction of learning spillovers has a critical effect on the dynamics of comparative advantage. Given this result, it is shown that only R&D policies for the marginal sector are effective in facilitating economic growth. If a decision is made to facilitate R&D investment within advanced sectors, R&D taxes, rather than subsidies, should be imposed on this marginal sector. Moreover, it is shown that trade liberalization does not affect the intrinsic dynamics of comparative advantage among surviving sectors in the economy if the locus of this marginal sector does not change significantly after trade liberalization.     

The accidental agro-power: constructing comparative advantage in Brazil

Brazil has emerged as an agro-export powerhouse: from being a net-agricultural importer and food aid recipient as recently as the 1960s and 1970s, it has now become the world’s third largest agricultural exporter, after the US and EU. What is more, Brazil’s new role as a major agricultural trader has provided an important foundation for its enhanced status and influence in global economic governance, as an emerging power and one of the ‘BRICS’. This paper analyses how such a remarkable transformation was brought about. I argue that Brazil’s emergence as an agricultural powerhouse was the result not of its natural factor endowments, but extensive intervention on the part of the Brazilian state that had the effect of constructing a new comparative advantage. This transformation was propelled by state-driven innovation and related policies that opened up massive new areas of the country to agriculture, enabled it to shift to producing goods in direct competition with the world’s dominant agricultural exporters, and generated significant gains in productivity and competitiveness. The irony is that the intention of these policies, initiated in the 1970s, was to foster industrial development in Brazil as part of its import-substitution industrialisation programme, yet they wound up having precisely the opposite effect – transforming Brazil into one of the world’s dominant agricultural powers.     

Country size,technology, and Ricardian comparative advantage

We develop a Ricardian model with heterogeneous firms in which country size and technology play a crucial role in the firm‐level variables. We show that a country with larger size and better technology exhibits higher productivity and lower price–cost margins even under assumptions of C.E.S. preferences and monopolistic competition. Welfare is higher in this country, not only due to the increased product variety but also due to increased competition in a domestic market. We also show that country size and technology impact critically on the intensive margin as well as the extensive margin in the gravity equation.     

Mineral endowment, labor productivity, and comparative advantage in mining

Labor productivity in the U.S. copper mining industry tripled between 1975 and 1995, allowing the industry to recover its comparative advantage. Mine level data on output and labor input indicate that over three-quarters of this increase came from labor productivity growth at individual mines, and less than a quarter from shifts in output from low- to high-productivity mines. This finding supports the hypothesis that new technology and innovation are as important or more important than mineral endowment in shaping labor productivity trends and comparative advantage in mining.     

Firm heterogeneity and Ricardian comparative advantage within and across sectors

This paper incorporates Melitz’s Econometrica (71:1695–1725, 2003) heterogeneous-firm trade model in the Ricardian model of comparative advantage with a continuum of sectors introduced by Dornbusch et al. (Am Econ Rev 67(5), 823–839, 1977). In particular, we characterise the equilibrium outcomes when neither sectors nor countries are symmetric. We find that trade patterns can follow Ricardian comparative advantage, while wage rates are proportional to market size due to a home market effect. Interestingly, trade liberalisation hurts the large country but benefits the small one by reducing the number of sectors with two-way trade and expanding those with specialised (one-way) trade. I would like to thank Mike Artis, Richard Baldwin, Frederic Robert-Nicoud, Matthias Helble, Giovanni Facchini, Thierry Verdier and a referee for their helpful comments and suggestions. Also I would like to thank Mike Artis for his excellent proof reading.     

Convergence and catching up in ASEAN: a comparative analysis

The increasing diversity of average growth rates and income levels across countries has generated a large literature on testing the income convergence hypothesis. Most countries in South-East Asia, particularly the five founding ASEAN member countries (ASEAN-5), have experienced substantial economic growth, with the pace of growth having varied substantially across countries. Recent empirical studies have found evidence of several convergence clubs, in which per capita incomes have converged for selected groupings of countries and regions. This paper applies different time series tests of convergence to determine if there is a convergence club for ASEAN-5, as well as ASEAN-5 and the USA. The catching up hypothesis states that the lagging country, with low initial income and productivity levels, will tend to grow more rapidly by copying the technology of the leader country, without having to bear the associated costs of research and development. Given the important effects of technological change on growth, this paper also examines whether ASEAN-5 is catching up technologically with the USA.     

Some aspects on regional integration,comparative advantage and consumer's diversity

This article describes one simple Cournot oligopoly model with linear inverse demand and international linkage, and tries to analyse how the degree of competitiveness, the diversity in comparative advantage, consumer preference and market volume are closely interrelated with each other in the course of free trade areas (FTA) liberalization. The influence of income/substitution effects to firm's profit maximization is also examined. My analysis shows some basic results and implications regarding the tariff-setting strategies and the incentive for endogenous internal liberalization, as well as the role of FTA formation on a stream to world-wide liberalization.     

An extended Heckscher-Ohlin model with transaction costs and technological comparative advantage

Summary. This paper introduces technological differences and transaction costs into the Heckscher-Ohlin (HO) model and examines the HO theorem, factor price equalization theorem, the Stolper-Samuelson theorem and the Rybczynski theorem. It shows that the HO theorem can be refined, and that the factor price equalisation theorem, the Stolper-Samuelson Theorem and the Rybczynski theorem do not always hold. It also shows that transaction costs play an important role in determining the equilibrium trade pattern.Received: 26 February 2001, Revised: 27 May 2003, JEL Classification Numbers: F10, F11. Correspondence to: Wenli ChengWe are grateful for comments from the anonymous referee, Hugo Sonnenschein, Guangzhen Sun and participants of the seminar on this paper at University of Washington.     

Inter‐regional competition,comparative advantage and environmental federalism

In this paper, we compare endogenous environmental policy setting with centralized and decentralized governments when regions have comparative advantages in different polluting goods. We develop a two‐region, two‐good model with inter‐regional environmental damages and perfect competition in product markets, where both regions produce both goods. Despite positive spillovers of pollution across regions, the model predicts that decentralization may lead to weaker or stricter environmental standards or taxes, depending on the degree of regional comparative advantage and the extent of transboundary pollution. This suggests that federalism can lead to either a “race to the bottom” or a “race to the top,” without relying on inefficient lobbying efforts or capital competition.