Internet development holds the promise of transmitting economic value across physical space at zero marginal cost. In such a “weightless economy”, what factors matter for the location of economic activity and thus for economic development? This paper sketches a model of spatial dynamics over...

In this paper, we study the dynamics of the market for Database Management Systems (DBMS), which is commonly assumed to possess network effects and where there is still some viable competition in our study period, 2000 – 2004. Specifically, we make use of a unique and detailed dataset on...

There has been a shift, in recent years, in the understanding of the process of development. It is not a switch (as often portrayed) from a state-dependent view of development to a market-reliant view. Rather, it involves rejecting a "blood, sweat and tears" view of development in favour of...

This paper estimates a structural model of economic geography using cross-country data on per capita income, bilateral trade, and the relative price of manufacturing goods. More than 70% of the variation in per capita income can be explained by the geography of access to markets and to sources...

We report on an on-going project, which asks a number of questions relevant to the study of state capacity. What are the main economic and political determinants of the state’s capacity to raise revenue and support private markets? How do risks of violent conflict affect the incentives to...

This paper presents a single unified framework that integrates the theoretical literature on Schumpeterian endogenous growth and major strands of the empirical literatures on R&D, productivity growth, and productivity convergence. Starting from a structural model of endogenous growth following...

This paper develops a model of economic growth and activity locating endogenously on a 3- dimensional featureless global geography. The same economic forces influence simultaneously growth, convergence, and spatial agglomeration and clustering. Economic activity is not concentrated on discrete...

Hundreds of studies have failed to establish the effects of decentralisation on a number of important policy goals. This paper examines the cases of Bolivia and Colombia to explore decentralisation’s effects on government responsiveness and poverty-orientation. I first summarize economic data...

Economies at early stages of development are often shaken by abrupt changes in growth rates, whereas in advanced economies growth rates tend to be relatively stable. To explain this pattern, we propose a theory of technological diversification. Production makes use of different input varieties,...

Disadvantaged groups tend also to constitute population minorities. One consequence of this is that the policies implemented by electorally accountable governments often fail to reflect minority interests. A policy solution is to enhance the political power of minority groups as a vehicle for...