An unprecedented number of refugees from Syria has sought refuge in both the Middle East as well as in Europe since the beginning of the civil war in Syria in 2011. Refugees do not only bring patterns of behavior they have acquired over their childhood and adolescence with them but also the –...

This study explores asymmetric volunteers' dilemma (VOD) games where costs for volunteering is different among players. Diekmann (1993) conjectures that an equilibrium, in which a player with less costs contributes, is more likely to be played if it is risk dominant. We re-examined this...

Many observers have noticed the importance of anger in contemporary politics, particularly with reference to populism. This article addresses the question under which conditions people become angry about a specific aspect of their lives: their personal financial situation. Specifically, it asks...

This paper presents a unique historical experiment to explore the dynamics of institutional change in the Middle Ages. We have assembled a novel dataset, where information on political institutions for northern-central Italian cities between 1000 and 1300 is matched with detailed information on...

We study cooperation within and between groups in the laboratory, comparing treatments in which two groups have previously been (i) in conflict with one another, (ii) in conflict with a different group, or (iii) not previously exposed to conflict. We model conflict using an inter-group Tullock...

We estimate the impact of Kenya's post-election crisis on individual risk preferences. The crisis interrupted a longitudinal survey of more than five thousand Kenyan youth, creating plausibly exogenous variation in exposure to civil conflict by the time of the survey. We measure individual risk...

In a society composed of citizens and a dictator: what are the conditions for a successful citizens' revolt? What kind of strategies do governments follow to prevent such revolts? In this paper we argue that the concept of networks is a very powerful tool to understand these issues, as shown...

We use a novel experimental design to examine the role of reputational concerns in explaining conditional cooperation in social dilemmas. By using the strategy method in a repeated sequential prisoners' dilemma in which the probabilistic end is known, we can distinguish between strategically and...

This paper provides experimental evidence showing that members of a majority group systematically shift punishment on innocent members of an ethnic minority. We develop a new incentivized task, the Punishing the Scapegoat Game, to measure how injustice affecting a member of one’s own group...