We present a theory of ethnic conflict in which coalitions formed along ethnic lines competefor the economy’s resources. The role of ethnicity is to enforce coalition membership: inethnically homogeneous societies members of the losing coalition can defect to the winnersat low cost, and this...

We study cross-country differences in the aggregate production function whenskilled and unskilled labor are imperfect substitutes. We find that there is a skill biasin cross-country technology differences. Higher-income countries use skilled labormore efficiently than lower-income countries,...

In this paper we apply the same framework totime-series data from the United States over theperiod 1963–1992. We find that throughout thisperiod the efficiencies of skilled labor and capitalhave risen. The efficiency of unskilled laborhas risen in tandem with those of the otherfactors in the...

We present a joint study of the U.S. structural transformation (thedecline of agriculture as the dominating sector) and regional convergence(of southern to northern average wages).We find empiricallythat most of the regional convergence is attributable to the structuraltransformation: the...

We use data on imports of computer equipment for a large sample of countries between 1970and 1990 to investigate the determinants of computer-technology adoption. We find strongevidence that computer adoption is associated with higher levels of human capital and withmanufacturing trade openness...

We use variation in oil output among Brazilian municipalities to investigate the effects ofresource windfalls. We find muted effects of oil through market channels: offshore oil has noeffect on municipal non-oil GDP or its composition, while onshore oil has only modest effects onnon-oil GDP...

This bold, imaginative book advances an entirely new theory of voters’ behavior.The starting point for this theory is that individuals are endowed with a set of beliefs, ora worldview, and derive psychological benefits from acting in accordance with these beliefs.However, the beliefs of most...

Empirical evidence suggests that the natural-resource curse operates through the behaviorof the political elite, yet there are few models that convincingly illustrate the mechanismat work. I present a model where natural-resource abundance generates power struggles,thereby increasing the...

The most striking difference in corporate-governance arrangements between rich andpoor countries is that the latter rely much more heavily on the dynastic family firm,where ownership and control are passed on from one generation to the other. We arguethat if the heir to the family firm has no...

We discuss political economy mechanisms which can explain the resource curse,in which an increase in the size of resource rents causes a decrease in the economy’stotal value added. We identify a number of channels through which resource rentswill alter the incentives of a political leader....