Using Consensus Forecasts monthly surveys, we show that experts' interest rate expectations in the Eurofranc market do not verify the rational expectations hypothesis. Instead, these expectations are found to be generated by a mixed process combining the traditional adaptive, regressive and...

Cet article expose la problématique de la volatilité des prix des matières premières, montre quels sont les moyens pour s’en protéger et explique comment les employer. Les instruments de couverture sont présentés en première section, en distinguant le type de besoin auquel ils...

This survey appears in extension of a previous exploratory survey (Bouraoui, 2008) dedicated to the impact of stock spams on volumes. The interest of the present research is to study the impact on stock prices while taking into account the evolution of volatility over time through a GARCH (1,1)...

We model the interactions between management regimes (municipal vs. delegated) and operating costs of water supply services in order to compare their performance and pricing. We estimate the models from panel data in France. We show that the choice between management regimes at the local...

South African-born tycoon Elon Musk, the world's richest person, is also a senior advisor to US President Donald Trump and head of the Department of Government Efficiency (DOGE) since 2025. His influence is growing globally, including in sub-Saharan Africa (SSA). Both Trump and Musk have their...

Africa is today the most important part of the Francophonie. French is an official or co-official language along with other languages in 21 African countries, all in sub-Saharan Africa (SSA). Since the end of colonialism and Cold War politics, changes in the Francophonie have been driven largely...

This paper deals with the role of speculation on food prices' fluctuations in Senegal. The analysis is based on a nonlinear rational expectations commodity storage model which seems to be the appropriate approach to explain the behavior of the speculators who intervene on the food markets. The...

Developing a model with a switching mechanism, we show how complex dynamics can be generated even though heterogeneity arises among agents with the same trading rules (fundamentalists). We assume that there are two experts which are imitated by other operators. We show that (i) market...

This paper presents the literature about econometric learning and its impact on the performances of monetary policy rules in the framework of the new canonical macroeconomic model. Rational expectations which are a building block of the original model can thus be replaced by expectations based...

À la lumière des informations issues des enquêtes Patrimoine 2004 et 2010 de l’INSEE et des évaluations des comptes nationaux financiers établis par la Banque de France, l’article propose une première analyse des ajustements patrimoniaux des ménages français depuis 2007.