Democracies go to war with each other less frequently than dictatorships do with each other. This is an established empirical regularity. However, it is not clear whether there is a causal link between democracy and peace. We use laboratory experiments to study whether there is a causal impact....

We consider two alternatives to inaction for governments combating terrorism, which we term Deterrence and Prevention. Deterrence – investing in resources that reduce the impact of an attack – generates a negative externality to other governments, making their countries a more attractive...

We conduct experiments to test the collective action dilemmas associated with defensive and proactive counterterror strategies. Defensive policies are associated with creating public ‘bads’ (e.g., a commons) whereas proactive policies are akin to the voluntary provision of public goods. When...

We report the results of experiments designed to test the effect of social status on contributions to a public good, with and without punishment. The experiments are conducted in four-person groups in a “star” network, where one central player observes and is observed by the others. This...

Democracies go to war with each other less frequently than dictatorships do with each other. This isan established empirical regularity. However, it is not clear whether there is a causal link betweendemocracy and peace. We use laboratory experiments to study whether there is a causal impact. We...