Can religiosity sway a society's propensity for violence against outgroups? We first introduce two state-year-level religiosity measures for several pre-Enlightenment European states with the frequencies of (i) religious language in book publications and (ii) Christian names of newborns. To...

This paper suggests that societies exhibiting a large degree of educational polarization among its populace are systematically more likely to slip into civil conflict and civil war. Intuitively, political preferences and beliefs of highly educated citizens are likely to differ fundamentally from...

Usually, studies analyzing terrorism focus on the total number of casualties or attacks in a given county. However, per capita rates of terrorism are more likely to matter for individual welfare. Analyzing 214 countries from 1970 - 2014, we show that three stylized findings are overturned in...

By facilitating the flow of information in society, communications technology (CT; e.g., newspapers, radio, television, the internet) can help terrorists to (i) spread their message, (ii) recruit followers, and (iii) coordinate among group members. However, CT also facilitates monitoring and...

This paper proposes a simple framework to better understand an opposition group’s choice between peace, terrorism, and open civil conflict against the government. Our model implies that terrorism emerges if constraints on the ruling executive group are intermediate and rents are sizeable,...

This paper presents an empirical test for the hypothesis that US news coverage of al-Qaeda causes al-Qaeda attacks. To isolate causality, disaster deaths worldwide provide an instrumental variable crowding out al-Qaeda coverage. Studying daily al-Qaeda coverage by CNN, NBC, CBS, and Fox News, as...

This paper introduces a methodology to measure misreported trade in a consistent way across countries and over time. Our methodology does not require any assumptions about which countries may be more or less likely to misreport – rather, all indices are derived endogenously with available...

Does trade openness systematically imply bigger governments, as proposed by Rodrik (1998)? This paper presents a novel and more refined explanation for when and why international trade may enlarge the public sector. We propose that trade openness is associated with bigger governments if (i) the...