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Pierre Dubois et Gosia Majewska
n° 22-1380, octobre 2022, révision janvier 2026
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...
Ilaria Pretelli, Erik Ringen et Sheina Lew-Levy
vol. 8, n° 41, octobre 2022
Our species’ long childhood is hypothesized to have evolved as a period for learning complex foraging skills. Researchers studying the development of foraging proficiency have focused on assessing this hypothesis, yet studies present inconsistent conclusions regarding the connection between...
Ankur Pandya, Mike Paulden, Jinyi Zhu, Tara A. Lavelle et James K. Hammitt
vol. 42, n° 7, octobre 2022, p. 885–892
Background: Decisions based on cost-effectiveness analyses (CEAs) using equal discount rates for health and cost outcomes are consistent with using a constant cost-effectiveness threshold over time. We sought to analyze trends in author-reported cost per quality-adjusted life-year (QALY) thresholds...
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...
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...
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...
David Martimort, Guillaume Pommey et Jérôme Pouyet
vol. 164, octobre 2022, p. 25–44
Modern airports provide commercial services to passengers in addition to aeronautical services to airlines. We analyze the optimal regulation design of the airport when the airport also invests in the quality of its infrastructure. The optimal regulation can be implemented with a price-cap and a...
James K. Hammitt
n° 71, octobre 2022
Downside risk aversion (downside RA) and decreasing absolute risk aversion (DARA) are different concepts that describe preferences for which the harm from bearing risk is lessened by an increase in wealth. This note presents some intuitive explanations of the difference between the two concepts...
Maria Giuseppina Bruna, Rey Dang, L'hocine Houanti, Jean-Michel Sahut et Michel Simioni
vol. 49, n° 103048, octobre 2022
Given the contrasting empirical results of the literature, the question of the influence of the presence of women on corporate boards of directors (WOCB) on the corporate social performance (CSP), we revisit this problem by developing a semi-parametric approach to capture the non-linear effects of...
