This paper introduces ambiguous games, a modification of the normal form that allows the
presence of vagueness in players' beliefs over the opponents' choice of strategies. An …

State-contingent contracts record agreements about rights and obligations of contracting
parties at uncertain future scenarios: descriptions of possible future events are listed and the …

A rational expectations econometrician or calibrator typically attributes no concern about
specification error to agents even as he shuttles among alternative specifications. 1 Decision …

This paper o® ers a new equilibrium concept for nite normal form games motivated by the
idea that players may have preferences which display uncertainty aversion. More specically …

To take into account both ex ante and ex post inequality considerations, one has to deal with
inequality and uncertainty simultaneously. Under certainty, much of the literature has …

This paper introduces a new solution concept, a minimax regret equilibrium, which allows for
the possibility that players are uncertain about the rationality and conjectures of their …

In the context of finite normal form games, this paper addresses the formalization and
implications of the hypothesis that players are rational and that this is common knowledge …

In this paper we show that while individuals with non-additive beliefs may display a strict
preference for randomisation in an Anscombe–Aumann framework, they will not do so in a …

We report on an experiment in which subjects choose actions in strategic games with either
strategic complements or substitutes against a granny, a game theorist or other subjects …

Nous exposons dans cet article les avancées de la théorie de la décision en environnement
incertain au cours des vingt dernières années. Plus précisément, nous partons des modèles …