This study estimates the effect of deployment location and length on the risk of developing PTSD, relative to what it would be from the normal military operations. We use a random sample of activity-duty enlisted personnel serving between 2001 and 2006. We identify PTSD cases from TRICARE...

Using detailed household-level data from Malawi on physical quantities of outputs and inputs in agricultural production, we measure total factor productivity (TFP) for farms controlling for land quality, rain, and other transitory shocks. We find that operated land size and capital are...

Victory in the War for Independence brought a vast amount of land within the grasp of the new American nation -- territory stretching from the Appalachian Mountains to the Mississippi River between the southern shores of the Great Lakes and Spanish Florida. These lands were initially claimed by...

In addressing environmental and natural resource problems, there is a move away from primary reliance upon centralized regulation toward assignment of property rights to mitigate the losses of open-access. I examine the assignment of private property rights during the 19th and early 20th...

The state of Georgia allocated most of its land to the public through a system of lotteries. These episodes provide unusual opportunities to assess the long-term impact of large shocks to wealth, as winning was uncorrelated with individual characteristics and participation was nearly universal...

The 1930's American Dust Bowl was an environmental catastrophe that greatly eroded sections of the Plains. Analyzing new data collected to identify low-, medium-, and high-erosion counties, the Dust Bowl is estimated to have immediately, substantially, and persistently reduced agricultural land...

This paper seeks to better understand the historical origins of current differences in norms and beliefs about the appropriate role of women in society. We test the hypothesis that traditional agricultural practices influenced the historical gender division of labor and the evolution and...

Feeding the world’s growing population is one of the most critical policy challenges for the 21st century. With tightening constraints on water, arable land, and other natural resources, agricultural innovation is quickly becoming the most promising path meet the nutrient needs for future...

How persistent are cultural traits? This paper uses data on anti-Semitism in Germany and finds continuity at the local level over more than half a millennium. When the Black Death hit Europe in 1348-50, killing between one third and one half of the population, its cause was unknown. Many...