Vega-Redondo (1997) showed that imitation leads to the Walrasian outcome in Cournot Oligopoly. We generalize his result to aggregative quasi-submodular games. Examples are the Cournot Oligopoly, Bertrand games with differentiated complementary products, CommonPool Resource games, Rent-Seeking games and generalized Nash-Demand games. JEL-Classifications: C72, D21, D43, L13.

We show in a sender-receiver game with strictly opposing interests that rewards enhance trust but do not influence truth-telling. Subjects who reward tend to tell the truth and trust more often in the presence and absence of reward opportunities. The amount of obtained rewards thereby enhances truth-telling. JEL Classification: C72, C73, D83.

This paper outlines the evolution of the theory of economic policy from the classical contributions of Frisch, Hansen, Tinbergen and Theil to situations of strategic interaction. Andrew Hughes Hallett has taken an active and relevant part in this evolution, having contributed to both the development and recent rediscovery of the classical theory, with possible relevant applications for model bu...

If an aggregative game satisfies the generalized Hahn conditions, then there exists a unique Nash equilibrium, which may not be interior and is globally stable under two alternative continuous adjustment processes with non-negativity constraints. JEL Classification Numbers: C72, D43, L13.

This paper provides an introduction to the analysis of games with strategic complementarities and applications to industrial organization: oligopoly pricing, comparative statics and a taxonomy of strategic behavior in two-stage games. D 2005 Elsevier B.V. All rights reserved. JEL classification: C72; L13

This paper proposes the solution concept of interim correlated rationalizability, and shows that all types that have the same hierarchies of beliefs have the same set of interim correlated rationalizable outcomes. This solution concept characterizes common certainty of rationality in the universal type space. JEL Classi…cation and keywords: C70, C72, rationalizability, incomplete information, c...

We present a class of games with a pure strategy being strictly dominated by another pure strategy such that the former survives along solutions of the Brown–von Neumann–Nash dynamics from an open set of initial conditions. JEL classification: C72

We characterize the maximum payoff that a team can guarantee against another in a class of repeated games with imperfect monitoring. Our result relies on the optimal trade-off for the team between optimization of stage-payoffs and generation of signals for future correlation. JEL classification: C72, D82 Date: 11th May 2004. 1

For the connections model of strategic network formation, with two-way flow of information and without information decay, specific parameter configurations are given for which Nash networks do not exist. Moreover, existence and the scope of Nash network architectures are briefly discussed. JEL Classification Numbers C72 · D85

We show that bounded monopoly profits are essential for the uniqueness of the Bertrand paradox (zero profit) outcome. Otherwise, a folk theorem obtains for one-shot homogeneous product Bertrand games: any positive (but finite) payoff vector can be achieved in a symmetric mixed-strategy Nash equilibrium. JEL Numbers: D43, C72