If Cournot oligopolists may sell their output prior to its production (forward trading), competition intensifies. Potentially, it may intensify so far as to imply convergence to the Bertrand equilibrium, as shown by Allaz and Vila (1993) for the case of linear demand and costs. The present paper...

In view of behavioral patterns left unorganized by current social preference theories, we propose a theory of reference dependent altruism (RDA). With RDA, one's degree of altruism increases at reference points. It induces equity and efficiency effects that are conditional on whether or not...

A recent advance in our understanding of repeated PDs is the detection of a threshold d* at which laboratory subjects start to cooperate predictively. This threshold is substantially above the classic threshold "existence of Grim equilibrium" and has been characterized axiomatically by Blonski,...

People overestimate the probability that others share their values or preferences. I introduce type projection equilibrium (TPE) to capture such projection in Bayesian games. TPE allows each player to believe his opponents share his type with intermediate probability \rho. After establishing...

In the canonical network model, the connections model, only three specific network structures are generically efficient: complete, empty, and star networks. This renders many plausible network structures inefficient. We show that requiring robustness with respect to stochastic transmission...

We study games where voluntary contributions can be adjusted until a steady state is found. In consent games contributions start at zero and can be increased by consent, and in dissent games contributions start high and can be decreased by dissent. Equilibrium analysis predicts free riding in...

This paper analyzes strategic choice in p-beauty contests. We first show that it is not generally a best reply to guess the expected target value (accounting for the own weight) even in games with n2 players and that iterated best response sequences are not unique even after perfect/cautious...

This paper proposes two generalization of the core and evaluates them on experimental data of assignment games (workers and firms negotiate wages and matching). The generalizations proposed allow for social utility components (e.g. altruism) and random utility components (e.g. logistic...

We show and explain how generosity beyond that explainable by social preferences can manifest in bargaining. We analyze an ultimata game with two parties vying to coalesce with a randomly chosen proposer. They simultaneously demand shares of the surplus. The proposer must then make an offer that...

The paper analyzes econometric models of altruistic giving in dictator and public goods games. Using existing data sets, I evaluate internal and external validity of "atheoretic" regression models as well as structural models of random behavior, random coefficients, and random utility,...