Much recent work has suggested that endogenous technological change tends to reinforce the position of the leading nations. Yet from time to time this leadership role shifts. We suggest a mechanism that explains this pattern of -leapfrogging- as a response to occasional major changes in...

A number of recent studies appear to show that international trade is a secondary factor in the growing inequality of wages, with technology probably the main culprit. These studies have, however, been subjected to severe and in some cases harshly worded criticism by trade theorists, who argue...

This paper develops models of spatial equilibrium in which a central metropolis emerges to supply manufactured goods to an agricultural hinterland. The location of the metropolis is not fully determined by the location of resources: as long as it is not too far from the geographical center of...

This paper presents a theoretical basis fcr the srgunent that large exchange rate shocks - such as the rise of the dollar from 1980 to 1985 - may shift historical relationships between exchange rates and trade flows. We begin with partial models in which large exchange rate fluctuations lead to...

It has been widely remarked that US import prices have not fully reflected movements in the exchange rate. This paper begins with an investigation of the actual extent of "pricing to market" by foreign suppliers. It shows that pricing to market is a real phenomenon, but not universal; in...

The postwar expansion of trade among the industrial countries has not had the strong distributional effects which standard models of trade would have led us to expect. This paper develops a model which attempts to explain this observation, while at the same time making sense of some other...

Conventional analysis of the welfare effects of U.S. oil price regulation in the 1970's focuses on the deadweight losses in the oil market. This paper argues that such analysis substantially understates the benefits from decontrolling prices, because decontrol will lead to an improvement in the...

Any interesting model of economic geography must involve a tension between "centripetal" forces that tend to produce agglomerations and "centrifugal" forces that tend to pull them apart. This paper explores one such model, and shows that the model links together a number of themes in the...

Very large urban centers are a conspicuous feature of many developing economies, yet the subject of the size distribution of cities (as opposed to such issues as rural-urban migration) has been neglected by development economists. This article argues that some important insights into urban...

This article assesses how the tension between centripetal forces (such as forward and backward linkages in production and increasing returns in transportation) and centrifugal forces (such as factor immobility and land rents) can produce a process of self-organization in which symmetric...