The existing literature has shown that less political uncertainty, or more central bank transparency, may worsen macroeconomic performance by raising the nominal wage. We extend this analysis to a non-bayesian framework, where there is some aversion to ambiguity. We show that the result found in...

We consider a two-player global game where creditors, who finance some investment project, have to decide whether to roll over their loans or not. We use a non-Bayesian approach where creditors exhibit some aversion to ambiguity. We show that an increase in ambiguity reduces the perceived...

On étudie et compare deux cas d'incertitude qui ont abouti à des arguments de référence en faveur de moins d'activisme de la politique économique. L'un , comme dans Brainard (1967), où cette incertitude porte sur l'effet global de la politique; et l'autre, comme dans Friedman (1960) pour la...

We use a non-Bayesian approach to uncertainty which allows for both optimism and pessimism in a simple global game, where each signal can exhibit a bias which is ambiguous. We underline a symmetry between two models of financial crises: a liquidity crisis model, and a currency crisis model. We...

According to the literature, in an expectations-augmented Phillips curve model, opacity is always preferred to transparency on central bank forecasts. By modelling the private sector's behavior explicitly, we show that transparency reduces the shocks. Consequently, transparency can be preferred.

We consider a model where the central bank faces a credibility problem in its announcements, but also cares about its credibility and, therefore, wants to make truthful announcements. We show that, although the central bank would be able to perfectly transmit its information to the private...

In this paper, we shed light on the selection of the benefi ciaries from the French competitiveness cluster policy which was launched in 2005 and extended to 2012. We disentangle the selection and self-selection eff ects, as emphasized in the theoretical literature on regional and industrial...

Will employment instability be the employment pattern tomorrow? Many studies support this view which is first discussed on the basis of various statistical studies already carried out. A general trend of employment instability is not proved to be true by statistical data. These data show that...

Analyse de l'accaparation d'actifs (asset grabbing) lors des privatisations, sur les marchés financiers et dans le "shadow banking"par des oligarques comme émergence d'une économie où le "gagnant rafle tout" (winner take all) formant un secteur "cupidaliste". Son apparition dans l'économie...

In 1998 the Fifty-first World Health Assembly passed the "health-for-all policy for the twenty-first century". During this assembly the Member States of the World Health Organization (WHO) reaffirmed their commitment to the principle that "the enjoyment of the highest attainable standard of...