A Simple Model of Brain Circulation

This paper considers the allocation of two types of individuals differentiated by levels of talent within and between two countries when they choose to be workers or entrepreneurs. The equilibrium with international migrations requires both countries to be sufficiently different in talent endowments and is consistent with individuals moving in one or in both directions whether they are entrepreneurs or workers. Average welfare per capita falls in the country losing highly talented individuals and rises in the country attracting them. However, in both countries, the liberalization of migrations for immigrants, emigrants or both is always supported by majority voting.

Manufacturers and Retailers in the Global Economy

We develop a general-equilibrium model to capture key features of the retailing and of the manufacturing industry in order to understand how these two industries interact and how labor is allocated between them. We show that the observed shift in employment from manufacturing to retailing, the rise in retailer product assortment and the emergence of slotting allowances in many retail markets are consistent with the global integration of product markets, while higher retail market concentration is best explained by technological change in retailing. We also identify a novel benefit from market integration consisting of efficiency gains in the vertical distribution chain.international trade, product variety, retailing, slotting allowance, multi-product firms

Endogenous Vertical Restraints in International Trade

This paper examines interbrand competition between a domestic and a foreign manufacturer who market their products through intermediaries. The contracts manufacturers offer these intermediaries are endogenous. In equilibrium contracts may specify exclusive territories (ET), depending on the degree of substitutability between products and the level and degree of transparency of trade barriers. Trade liberalization, through lower or more transparent barriers, may lead manufacturers to use ET, thereby substituting private anti-competitive arrangements for government-imposed barriers. This substitution may decrease competition and welfare, and thus create a role for competition policy in a freer trade environment.

Why Parallel Trade may Raise Producers Profits

This paper shows that a manufacturer may benefit from parallel trade. In addition to an intuitive condition about the effect of demand shocks, this occurs when competitive retailers must order inventories before they know the realization of demand and for products whose sale value drops at the end of the demand period. For these types of products, letting retailers trade unsold inventories generally results in larger orders placed with the manufacturer, higher manufacturer profit and higher consumer surplus. The model provides a simple explanation as to why the volume of parallel trade is now very large and accepted by manufacturers for some products such as automobiles, clothes, toys, consumer electronics, musical recordings, cosmetics and perfumes.parallel trade, distribution

Exclusive Dealing and Common Agency in International Markets

This paper investigates the contractual choice between exclusive dealing and common agency in a simple international oligopoly model where products are sold through intermediaries. We find that when trade barriers are high domestic firms tend to adopt exclusive dealing contracts, whereas trade liberalization may lead firms to choose common agency. Social welfare can be raised by prohibiting exclusive dealing (common agency) when trade barriers are high (low) and products are close substitutes. --exclusive dealing,common agency,international trade,competition policy

Buyer Power in International Markets

This paper investigates the implications for international markets of the existence of retailers/wholesalers with market power. Two main results are shown. First, in the presence of buyer power trade liberalization may lead to retail market concentration. Due to this concentration retail prices may be higher and welfare may be lower in free trade than in autarky, thus reversing the standard e¤ects of trade liberalization. Second, the pro-competitive effects of trade liberalization are weaker under buyer power than under seller power.buyer power, retailing, international trade.

Imports, Pass-Through, and the Structure of Retail Markets

We construct a model of trade with heterogeneous retailers to examine the effects of trade liberalization on retail market structure, imports and social welfare. We are especially interested in studying the degree of pass-through of import into retail prices and the effects of retail market regulation. The paper shows that the degree of pass-through may be large when market structure effects are taken into account, and that restrictions on retailing may have significant effects on imports and the degree of pass-through. The paper helps explain the apparent discrepancy between the low observed degree of pass-through and the large benefit that consumers seem to derive from trade liberalization.international trade, retailing, pass-through, firm heterogeneity

Do Birds of a Feather Flock Together? Immigration Flows and Cultural Clustering in Host Countries

This paper presents a simple theoretical framework in which immigrants have a relative incentive to cluster in host countries where cultural characteristics and imperfect information sustain the segmentation of the labor market and a higher wage in foreign communities. The hypothesis is tested on a panel of immigration flows to OECD countries. The pull effect of cultural communities is supported and it is found that the minimum size of a given cultural community is around 5% of the foreign population. It is also found that the pull effect weakens as the community grows as predicted by the theoretical framework.International migrations; relative incomes; cultural clustering

Exclusive Dealing and Common Agency in International Markets

This paper investigates the contractual choice between exclusive dealing and common agency in a simple international oligopoly model where products are sold through intermediaries. We find that when trade barriers are high domestic firms tend to adopt exclusive dealing contracts, whereas trade liberalization may lead firms to choose common agency. Irrespective of the level of trade barriers, the equilibrium contract adopted by each manufacturer is shown to decrease domestic welfare as compared to the other possible contract when products are close substitutes.

On sunk costs and trade liberalization in applied general equilibrium

We argue that the rationalization gains often predicted by static applied general equilibrium models with imperfect competition and scale economies are artificially boosted by an unrealistic treatment of fixed costs. We introduce sunk costs into one such model calibrated with real-world data. We show how this changes the oligopoly game in a way significant enough to affect, both qualitatively and quantitatively, the outcome of a trade liberalization exercise.Free trade