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Does production technology adoption affect conflict? This paper studies this question with yearly historical data on weather, peasant revolts and the diffusion of sweet potatoes in China between 1470 and 1900. It shows that droughts increased peasant revolts by about 10% whereas the effect of floods was not significant. Moreover, the diffusion of a new(More)
This Web Appendix provides additional material to the paper "The Labor Market Returns to Cognitive and Noncognitive Ability" published in in American Economic Journal: Applied Economics. This Appendix analyzes several issues related to sample selection. Table B1 gives the summary statistics for the additional variables used in Appendix B-F. As already(More)
In the lowest unique positive integer (LUPI) game, players pick positive integers and the player who chose the lowest unique number (not chosen by anyone else) wins a …xed prize. We derive theoretical equilibrium predictions, assuming fully rational players with Poisson-distributed uncertainty about the number of players. We also derive predictions for(More)
This paper investigates the effects of illegal file sharing (piracy) on music and movie sales. The Swedish implementation of the European Union directive IPRED on April 1, 2009 suddenly increased the risk of being caught and prosecuted for file sharing. We investigate the subsequent drop in piracy as approximated by the drop in Swedish Internet traffic and(More)
A robust positive correlation between height and intelligence, as measured by IQ tests, has been established in the literature. This paper makes several contributions toward establishing the causes of this association. First, we extend the standard bivariate ACE model to account for assortative mating. The more general theoretical framework provides several(More)
This paper documents that home owners are about twice as likely as renters to participate in the stock market in the USA and Sweden. Given this fact, the goal of the paper is to study the effect of home ownership and home purchases on stock market participation. The paper presents evidence that the effect of home ownership per se is only small or even(More)
Postprint This is the accepted version of a paper published in Journal of Economic Behavior and Organization. This paper has been peer-reviewed but does not include the final publisher proof-corrections or journal pagination. Access to the published version may require subscription. Abstract: The implementation of a copyright protection reform in Sweden in(More)
Teachers are increasingly being drawn from the lower parts of the general ability distribution, but it is not clear how this affects student achievement. We track the position of entering teachers in population-wide cognitive and non-cognitive ability distributions using school grades and draft records from Swedish registers. The impact on student(More)
We study the evolution of the global arms trade network using a detailed dataset on all international transfers of major conventional weapons over the period 1950-2007. First, we provide a careful description of the characteristics of global arms trade using tools from social network analysis. Second, we relate our …ndings to political regimes by studying(More)
We study the intergenerational transmission of cognitive and non-cognitive abilities between parents and sons using population-wide enlistment data. Conscripts are evaluated at the same age and with comparable methods across cohorts, and we correct for measurement error bias in fathers' ability measures by using their brothers' abilities as instruments. The(More)