This book surveys how economists engage with knowledge and beliefs in various fields of economic analysis, such as general equilibrium theory, decision theory, game theory, experimental economics, evolutionary theory of the firm, financial markets and the history of economic thought.

[eng] Contagion of opinions in financial markets . . Many practitioners have underlined the role played by contagion processes in the generation not only of speculative bubbles but also of excess volatility. The following text shows the truth of such a point of view. Our idea is that, at the...

[eng] The stability of cooperation in stochastic evolutionary games. . In his influential book, Robert Axelrod analyzes The Evolution of Cooperation within a Prisoner's dilemma framework : he shows that the highly cooperative strategy known as TH-FOR-TAT is collectively stable. The concept of...

[fre] Dans ses développements récents, la théorie des jeux évolutionnistes a modélisé l'existence de perturbations aléatoires affectant la dynamique de l'apprentissage. Ces travaux ont conduit au concept de stabilité stochastique, pro­posé par Foster et Young. Dans un jeu symétrique...

By illuminating the philosophical roots of the various notions of knowledge employed by economists, this Handbook helps to disentangle conceptual and typological issues surrounding the debate on knowledge amongst economists. Wide-ranging in scope, it explores fundamental aspects of the...