The Iterated Prisoner's Dilemma with Choice and Refusal (IPD/CR) is an extension of the Iterated Prisoner's Dilemma with evolution that allows players to choose and to refuse their game partners. From individual behaviors, behavioral population structures emerge. In this report, we examine one...

Partner selection is an important process in many social interactions, permitting individuals to decrease the risks associated with cooperation. In large populations, defectors may escape punishment by roving from partner to partner, but defectors in smaller populations risk social isolation. We...

Motivated by recent auctions of licenses for the radio frequency spec trum, we consider situations where multiple objects are auctioned simultaneousl y by means of a second-price, sealed-bid auction. For some buyers, called globa l bidders, the value of multiple objects exceeds the sum of the...

This paper examines sets of Nash equilibria in sender-receiver games that are stable against replacement by alternative Nash equilibria. Such stable sets exist. In {\em partial common interest games} they contain only informative equilibria. The stability requirement sharpens currently available...

Varying quantities of a single good can be produced using at least two and at most $n$ factors of production. The problem of allocating the surplus among the factors is studied in a dynamic model with adaptive behavior. Representatives for the factors (called players) make wage demands based on...

Laboratory experiments concerning decision under uncertainty tend to uncover systematic violations of Bayesian rationality. When models that posit Bayesian rationality are compared to non-experimental data, though, they fit the data well. One possible explanation is that an agent's global...

An individual faces a choice between streams of outcomes in several periods in the future. This paper examines an axiomatization of preference relations over these streams that leads to a simple functional representation of these preferences. Motivated by the loss- aversion aspects of Tversky...

This paper characterizes interim efficient mechanisms for public good production and cost allocation in a two-type environment with risk neutral, quasi-linear preferences and fixed size projects, where the distribution of the private good, as well as the public goods decision, affects social...

One of the more convincing interpretations of mixed strategy equilibria describes a mixed equilibrium as a steady state in a large population in which all players use pure strategies but the population as a whole mimics a mixed strategy. To be complete, however, this interpretation requires a...

We study a dynamic optimal routing problem, where a controller has to decide to which of two queues should arriving customers (representing packets, messages, call etc...) be sent. The service rate in each queue may depend on the state of the system, may change in time and is unknown to the...