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.

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...

This article argues for the need to integrate beliefs the individual and collective levels in economic theory, something which is referred to as a "cognitive turning point". In the first section of the article, we show that instrumental rationality does not offer an adequate framework for...

[fre] L'idée centrale, qui fonde l'analyse de la spéculation financière menée par J.M. Keynes dans la Théorie Générale, est que l'anticipation du spéculateur est une anticipation quant à l'opinion des autres opérateurs sur le cours boursier de la période suivante. On peut...

The number of central banks in the world is approaching 180, a tenfold increase since the beginning of the twentieth century. What lies behind the spread of this economic institution? What underlying process has brought central banks to hold such a key role in economic life today? This book...

Due to the recent stock market crises, many economists have been keeping aloof from the « core» of financial theory, whose main contention is that stock market prices are at any moment the best possible estimate of the « true» value of the issuing firms. Most of those economists have brought...

[spa] La industria francesa frente a los apremios de cambio monetario - A más de su aparente desorden, las peripecias monetarias traducen una realidad fundamental : el poner a debate las modalidades del crecimiento que impera desde de la ultima guerra y sus formas institucionales. En este...

[eng] A new interpretation of german hyperinflation. The aim of this article is to present an interpretation of German hyperinflation which will break radically with the traditional monetarist interpretation. In opposition to the monetarist position, the author has distinguished two highly...

[fre] Analyse des phénomènes d'influence. De la psychologie sociale et cognitive à l'économie financière. . On note dans les travaux récents d'économie financière un nombre grandissant de modèles cherchant à formaliser la manière dont interagissent sur les marchés financiers des...

[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...