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Farid Gasmi, Dorgyles Kouakou et Maruf Sanni
n° 22-1368, octobre 2022
At the turn of the millennium, developing countries face a twofold societal challenge. First, these countries need to understand the deep principles underpinning informality, which is by now recognized as a structuring phenomenon of their economies. Second, for reasons related to both intra- and...
Tuan Anh Luong, Manh-Hung Nguyen, N.T. Khuong Truong et Kien Le
n° 22-1373, octobre 2022
This paper investigates the extent to which exposure to climate volatility can in-fluence individual migration decisions in Vietnam, based on the historical rainfall data from 70 weather stations in Vietnam and the Vietnam Access to Resources House-hold Survey. Utilizing the exogenous variation in...
Pierre Pestieau et Xavier Flawinne
octobre 2022, 192 pages
Les sociétés contemporaines font face au défi du vieillissement de la population. Nous vivons de plus en plus longtemps, et en bonne santé. Mais tout le monde ne bénéficie pas de cette longévité accrue de la même façon. Combien coûte le vieillissement ? À quelles conditions peut-on vieillir...
Patrick Rey, Yossi Spiegel et Konrad Stahl
n° 22-1375, octobre 2022, révision avril 2024
We study the feasibility and profitability of predation in a dynamic environment, using a parsimonious infinite-horizon, complete information setting in which an incumbent repeatedly faces potential entry. When a rival enters, the incumbent chooses whether to accommodate or predate it; the entrant...
Bastien Cabarrou, Eve Leconte, Patrick Sfumato, Jean Marie Boher et Thomas Filleron
vol. 22, n° 278, octobre 2022
Given the inherent challenges of conducting randomized phase III trials in older cancer patients, single-arm phase II trials which assess the feasibility of a treatment that has already been shown to be effective in a younger population may provide a compelling alternative. Such an approach would...
Laurent Miclo
vol. 184, octobre 2022, p. 275–322
Consider finite state space irreducible and absorbing Markov processes. A general spectral criterion is provided for the absorbing time to be close to an exponential random variable, whatever the starting point. When exiting points are added to the state space, our criterion also insures that the...
Jean-Paul Décamps et Stéphane Villeneuve
vol. 205, n° 105522, octobre 2022
We study a dynamic model of a firm whose shareholders learn about its profitability, face costs of external nancing and costs of holding cash. The shareholders' problem involves a notoriously challenging singular stochastic control problem with a two-dimensional degenerate diffusion process. We...
Giuliana Spadaro, Catherine Molho, Jan-Willem Van Prooijen, Angelo Romano, Cristina O. Mosso et Paul A.M. Van Lange
octobre 2022
Corruption is a pervasive phenomenon that affects the quality of institutions, undermines economic growth and exacerbates inequalities around the globe. Here we tested whether perceiving representatives of institutions as corrupt undermines trust and subsequent prosocial behaviour among strangers....
Pierre Dubois et Gosia Majewska
n° 22-1380, octobre 2022, révision novembre 2025
In many industries, the market structure determines the level of both price competition and promotional activities. We study how price and advertising strategies change when firms merge in pharmaceutical markets in the US. We show that across all drug markets, although mergers do indeed increase...
Isis Durrmeyer et Nicolas Martinez
n° 22-1378, octobre 2022, révision décembre 2024
We develop a structural model to represent individual transportation decisions, the equilibrium road traffic levels, and speeds inside a city. The model is micro-founded and incorporates a high level of heterogeneity: individuals differ in access to transportation modes, values of travel time, and...
