We investigate the empirical relationship between ethnicity and culture, defined as a vector of traits reflecting norms, attitudes and preferences. Using surveys of individual values in 76 countries, we find that ethnic identity is a significant predictor of cultural values, yet that...

In this study we extend our previous work to examine the dynamic relationship between violence committed by Palestinian factions and that committed by Israel during the Second Intifada. We find a statistically significant relationship between Israeli fatalities claimed by groups associated with...

Should privately informed agents with diverging interests act independently or should they commit to a mechanism? This paper analyzes different communication and decision protocols when communication involves delay. It studies under which conditions agents should (i) choose their actions...

We examine who benefits when there is a strong leader in place, and those who benefit when a situation lacks a proper leader. There are fractious terrorist groups who seek to serve the same people in a common cause against a common enemy. The groups compete for rents obtained from the public by...

This paper studies the dynamics of violence in the Palestinian-Israeli conflict since the outbreak of the Second (or 'Al-Aqsa') Intifada in September 2000, during which more than 3,300 Palestinians and more than 1,000 Israelis have been killed. The conflict has followed an uneven pattern, with...

There has been a wide-spread belief that elections with a wide franchise following removal of an oppressive dictator lead to establishment of a government that is not vulnerable to mass protest. At the same time, most of the post-World War II non-constitutional exits of recently-installed...

Regimes controlled by a rich elite often collapse and make way for democracy amidst widespread social unrest. Such regime changes are often followed by redistribution to the poor at the expense of the former elite. We argue that the reason why the elite may have to resort to full-scale...

We develop a simple theory which formally describes how charities can resolve the information asymmetry problems faced by small donors by working with large donors to generate quality signals. To test the model, we conducted two large-scale natural field experiments. In the first experiment, a...

Should arbitrators adjudicate on the basis of their own investigations, or invite the interested parties to make their cases and decide on the basis of the information so gathered? I call the former the inquisitorial procedure in arbitration and the latter the adversarial procedure. I conduct a...