We argue that rules and rule-following provide a key means of solving social dilemmas by revealinginformation about individual willingness to cooperate, thereby facilitating assortative matchingand the exclusion of non-cooperative types. Rules impose costs on prospective entrants to anygroup and...

In this paper we formalize the notion of lexicographic belief hierarchies in standard partitional models (Aumann, 1976). We introduce the notion of epistemic equivalence between two belief space, and show that the state space representation of lexicographic belief hierarchies is equivalent to...

We analyze strategic firm behavior in settings where the production stage is followed by several periods during which only sales take place. We analyze the dynamics of the market structure, the development of prices and sales over time, and the implications for profits and consumer surplus. Two...

We study extrapolation between games in a laboratory experiment. Participants in our experiment first play either the dominance solvable guessing game or a Coordination version of the guessing game for five rounds. Afterwards they play a 3x3 normal form game for ten rounds with random matching...

This paper investigates the effectiveness of an employment program exclusively run by and in a private sector firm, in order to find out whether a private program without cream-skimming can be beneficial to (a) the individual private firm and (b) society at large by outperforming public...

In this paper we introduce the concept of rational probability measures. These are probabilitymeasures that map every Borel event to a rational number. We show that a rational probabilitymeasure has a finite support. As a consequence we prove a new version of Kolmogorov extensiontheorem. In the...

Using data on individuals of age 50 and older from 11 European countries, we analyze two economic aspects of subjective well-being of older Europeans: satisfaction with household income, and job satisfaction. Both have been shown to contribute substantially to overall well-being (satisfaction...

We consider the problem of minimizing the makespan on restricted related parallel machines. In restricted machine scheduling each job is only allowed to be scheduled on a subset of machines. We study the worst-case behavior of local search algorithms. In particular, we analyze the quality of...

Collective decisions are modeled by preference correspondences (rules). In particular, we focus ona new condition: "update monotonicity" for preference rules. Although many so-called impossibilitytheorems for the choice rules are based on -or related to- monotonicity conditions, this...

In this paper we study the effect of information on the occurrence of intentional price wars on the equilibrium path. An episode of low prices is an intentional price war if it follows a period of high prices which was ended intentionally by one of the firms in the market (the price war leader)....