In the past decade, nearly 20 studies have found a strong, persistent pattern in surveys and behavioral experiments from over 40 countries: individual exposure to war violence tends to increase social cooperation at the local level, including community participation and prosocial behavior. Thus...

This paper tests the hypothesis that a high and persistent exposure to infectious diseases increases the likelihood of civil conflicts. Diseases that are difficult to prevent and treat may reduce the opportunity costs of violent activities, both directly and indirectly. The analysis exploits new...

Economic Development, Inequality and War shows how economic decline, income inequality, pervasive rent seeking by ruling elites, political authoritarianism, military centrality and competition for mineral exports contribute to war and humanitarian emergencies. Economic regress and political...