This paper explores the quantitative relation between non random, assortative matching and the maintenance of cooperative behavior under evolutionary dynamics. We consider a population of individuals who are \hardwired" to play either cooperate or defect. They meet other individuals according to...

We present a preliminary model of the within-season behavior of a fishery regulated by a total allowable catch constraint and season closure. An individual's catch depends on where he/she deploys effort and on the effort deployment decisions of other harvesters such that catch per unit effort is...

This paper makes two contributions in the context of seller-buyer relationships with bilateral relationship-speciï¬c investment. Firstly, we demonstrate how ex-post negotiations via double auctions can be used to alleviate and often resolve the hold-up problem. Secondly, we show that ex-post...

We explore the effects of social distance on reciprocal behavior in an experiment conducted over the Internet on three continents and in classroom laboratory sessions conducted in Israel and Spain. Our design elicitsindividual behavior profiles over a range of contingencies, enabling us to...

When labor is indivisible, there exist efficient outcomes with some agents randomly unemployed (Rogerson 1988). We integrate this idea into the modern theory of monetary exchange, where some trade occurs in centralized markets and some in decentralized markets (as in Lagos and Wright 2006). This...

A standard assumption in integrated assessment models of climate change is that population and productivity are growing, but at a decreasing rate. We explore the signifcance of the assumption of population and productivity growth for greenhouse gas abatement. After all, there has been no long...

In many principal-agent relations, objective measures of the agents' performance are not available. In those cases, the principals have to rely on subjective performance measures for designing incentive schemes. Incentive schemes based on subjective performance measures open the possibilities...

We study the problem of obtaining accurately sized test statistics in finite samples for linear regression models where the error dependence is of unknown form. With an unknown dependence structure there is traditionally a trade-off between the maximum lag over which the correlation is estimated...

This paper examines the causal association between family background characteristics--parental education and family size-and returns to schooling using data from the Occupational Change in a Generation Survey. I first develop a formal model of schooling and earnings, with heterogeneous returns...

Gender differences in "competitiveness," previously documented in laboratory experiments, are hypothesized to play a role in a wide array of economic outcomes. The current paper provides evidence of competition-aversion in a natural setting somewhere between the simplicity of a laboratory...