The Burnside and Dollar (2000) finding that aid raises growth in a good policy environment has had an important influence on policy and academic debates. We conduct a data gathering exercise that updates their data from 1970–93 to 1970–97, as well as filling in missing data for the original...

Does economic development depend on geographic endowments like temperate instead of tropical location, the ecological conditions shaping diseases, or an environment good for grains or certain cash crops? Or do these endowments of tropics, germs, and crops affect economic development only through...

Artificial states are those in which political borders do not coincide with a division of nationalities desired by the people on the ground. We propose and compute for all countries in the world two new measures how artificial states are. One is based on measuring how borders split ethnic groups...

One feature of adjustment loans that has been often overlooked in their evaluation is their frequent repetition to the same country, with such extremes as the 30 IMF and World Bank adjustment loans to Argentina over 1980-99 or the 26 adjustment loans to Cote d'Ivoire and Ghana. The rate of...

The classic narrative of economic development -- poor countries are caught in poverty traps, out of which they need a Big Push involving increased aid and investment, leading to a takeoff in per capita income -- has been very influential in development economics since the 1950s. This was the...

We present evidence that measures of “social cohesion,” such as income inequality and ethnic fractionalization, endogenously determine institutional quality, which in turn casually determines growth.

National economic policies’ effects on growth were over-emphasized in the early literature on endogenous economic growth. Most of the early theoretical models of the new growth literature (and even their new neoclassical counterparts) predicted large policy effects, which was followed by...

Using a newly assembled dataset spanning from 1820 to 1998, we study the relationship between the occurrence and cruelty of episodes of mass killing and the levels of development and democracy across countries and over time. We find that massacres are more likely at intermediate levels of income...