Gravity equations in trade imply that trade flows are proportional to the size of a country and inversely proportional to distance.  This paper develops an analogy of these observations with gravity in physics, and provides geometric intuition for a large class of mathematical processes in two...

Why do so many African governments consistently impose high tax rates and make little investment in productive public goods when alternative policies could yield greater tax revenues and higher national income? We posit and test an intertemporal political economy model in which the government...

Do openness to trade and higher levels of human capital promote faster productivity growth? That they do is a key implication of several versions of endogenous growth theory. To answer the question we use panel data on 93 countries spanning the 1970-2000 period. Controlling for fixed effects as...

Do openness to trade and higher levels of human capital growth promote faster growth? To answer that question we use a panel of countries to investigate the role of human capital and two measures of openness in determining both the level of income and its growth rate. We argue that focusing on...

This paper studies the distributional impact of commodity price shocks over both the short and very long run.  Using a GARCH model, we find that Australia experienced more volatility than many commodity exporting developing countries over the periods 1865-1940 and 1960-2007.  A single equation...

A windfall of natural resource revenue (or foreign aid) faces government with choices of how to manage public debt, investment, and the distribution of funds for consumption, particularly if the windfall is both anticipated and temporary.  Standard policy advice follows the permanent income...

Abstract. This paper studies the distributional impact of commodity price shocks over the both the short and very long run. Using a GARCH model, we find that Australia experienced more volatility than many commodity exporting developing countries over the periods 1865- 1940 and 1960-2007. A...

Many previous studies of the role of trade during the British Industrial Revolution have found little or no role for trade in explaining British living standards or growth rates.  We construct a three-region model of the world in which Britain trades with North America and the rest of the...

UK inflation varied greatly over 1865-1990, in response to many policy and exchange-rate regimes, two world wars and oil crises, and major legislative, and technological changes. It is modelled as responding to excess demands from all sectors of the economy: goods and services, factors of...

This paper introduces new data on climatic conditions to empirical tests of growth theories. We find that, since 1960, temperate countries have converged towards high levels of income while tropical nations have converged towards various income levels associated with economic scale and the...