Online labor markets have great potential as platforms for conducting experiments, as they provide immediate access to a large and diverse subject pool and allow researchers to conduct randomized controlled trials. We argue that online experiments can be just as valid - both internally and...

In a model of evolution driven by conflict between societies more powerful states have an advantage. When the influence of outsiders is small we show that this results in a tendency to hegemony. In a simple example in which institutions differ in their "exclusiveness" we find that these...

This paper studies the interactions between an individual's self esteem and his social environment in the workplace, at school, and in personal relationships. Because a person generally has only imperfect knowledge of his own abilities, people who derive benefits from his performance (parent,...

This paper explores the power of threats in the absence of binding commitment. The threatener cannot commit to carrying out the threat if the victim refuses payment, and cannot commit to not carrying out the threat if payment is made. If exercising the threat is costly to the threatener, then...

In this paper, we investigate the dynamics of informational regulatory approaches by analyzing the impact of smog alerts issued on consecutive days on discretionary outdoor activities in Southern California. Short-run adjustments to transitory risk entail costs that are likely to influence the...

This paper shows that existing evidence on labor supply behavior places an upper bound on risk aversion in the expected utility model. I derive a formula for the coefficient of relative risk aversion (g) in terms of (1) the ratio of the income elasticity of labor supply to the wage elasticity...

This paper extends our earlier analysis of interdependent security issues to a general class of problems involving discrete interdependent risks with heterogeneous agents. There is a threat of an event that can only happen once, and the risk depends on actions taken by others. Any agent's...

Whether the danger invoked is nuclear war or genetically modified foods, far more people in some countries than in others say they are afraid. Using data from six surveys, I show that the levels of reported fear of different dangers correlate strongly across both individuals and countries. I...

Are CEOs' attitudes and beliefs linked to their fims' innovative performance? This paper uses Malmendier and Tate's measure of overconfidence, based on CEO stock-option exercise, to study the relationship between a CEO's "revealed beliefs" about future performance and standard measures of...