Publications des chercheurs de PSE

Most seats in private cars are empty when drivers hit the road. Carpooling could thus represent a low-cost strategy to reduce carbon emissions in the transportation sector. Using revealed preference data from actual long-distance carpooling trips in France, we estimate passengers' preferences for the different characteristics of a ride. We find that passengers are highly price-elastic and value significantly the convenience of pick-up and drop-off locations. In contrast, their value of time once in the car is significantly lower than typical reference values. Finally, we discuss the effectiveness of a number of counterfactual policies aimed at promoting carpooling.

We examine the impact of providing information on the income of the top 1% earners on attitudes towards this group. We focus on the income at the top derived from capital and labour, an aspect scarcely studied in previous literature. We carried out a randomized online survey with 2000 French respondents. Our findings reveal that: (i) at the baseline, respondents tend to overestimate the income of the top 1%, have no clear priors on their capital vs. labor shares, and want them to pay a higher income tax rate than the current one; (ii) providing quantitative information about the income sources at the top consistently shifts attitudes toward the rich to the unfavorable spectrum. This shift does not result from experimenter demand effects; (iii) individuals most responsive to our treatments vote for left-wing candidates and have egalitarian notions of justice.

This article investigates the role immigrants and their native-born children play in shaping native attitudes toward immigrants in the European Union. By exploiting the 2017 Special Eurobarometer on immigrant integration, we show that countries with a relatively high share of immigrants are more likely to believe that immigrants are a burden on the welfare system and worsen crime. In contrast, native opinions on the impact of immigration on culture and the labor market are unrelated to the presence of immigrants. We also find that the effects of second-generation immigrants on pro-immigrant attitudes toward security and fiscal concerns are positive (as opposed to first-generation immigrants). Finally, we find no impact of the immigrant share on the attitudes of natives supporting far-left or left political parties, while it is the most negative among respondents affiliated with far-right parties.

We study the effects of the SRU law introduced in France in December 2000 to support scattered development of public housing in cities and favor social mixity. This law imposes 20% of public dwellings to all medium and large municipalities of large-enough cities, with fees for those not abiding by the law. Using exhaustive fiscal data, we evaluate the effects of the law over the 1996-2008 period using a difference-in-differences approach at the municipality and neighborhood levels. We find that the law stimulated public housing construction in treated municipalities, but only slightly increased the presence of low-income households. Indeed, new public dwellings enter categories to which medium-income are eligible and most additional occupants are not poor. Within municipalities, the policy decreased public housing segregation but it barely decreased low-income segregation. This comes from local authorities increasing over time the presence of public dwellings in neighborhoods away from existing public housing but in places concentrating low-income households.

The Repugnant Conclusion is an implication of some approaches to population ethics. It states, in Derek Parfit's original formulation, For any possible population of at least ten billion people, all with a very high quality of life, there must be some much larger imaginable population whose existence, if other things are equal, would be better, even though its members have lives that are barely worth living. (Parfit 1984: 388)

It is widely assumed that the renminbi (RMB) cannot acquire a meaningful place in central bank reserve portfolios without full liberalization of China's capital account. We argue that the RMB can in fact develop into an international reserve currency in the absence of capital‐account convertibility. Trade and investment links can drive use despite limited access to Chinese financial markets. But this route to currency internationalization requires policy support. China must provide access to RMB through loans and the People's Bank of China (PBoC) currency swaps. It must ensure the convertibility of RMB into US dollars in offshore markets. It must provide RMB services at a stable and predictable price. Currency internationalization without full capital‐account liberalization thus requires the RMB to be backed by dollar reserves, which the PBoC consequently will continue to hold and use. Hence, we do not foresee RMB internationalization as supplanting dollar dominance.

Chaque année, autour de 100 000 personnes acquièrent la nationalité française, le plus souvent en lien avec leur situation familiale (mariage, naissance et enfance en France, parents d’enfants français…). Ces acquisitions de nationalité tiennent aussi aux mutations historiques et géopolitiques. Ainsi depuis le début des années 1960, plus de 200 000 personnes sont redevenues françaises après avoir perdu cette nationalité, en particulier lors de l’accès à l’indépendance de territoires colonisés. Cette procédure discrète et méconnue permet d’éclairer certains des « troubles dans la nationalité » de l’ère postcoloniale.

Food waste constitutes a significant economic inefficiency and should therefore be a central policy issue. While in low-income countries food waste is often associated with poor harvesting, storage and transportation conditions, in middle-and high-income countries consumers' behavior is considered to be the main driver of this problem. The general aim of our paper is to contribute to the understanding of food waste. We focus on household food waste and the economic mechanisms behind it. We propose a stylized model in which food waste appears as an economic decision of households. Our framework of "rational food waste" relies primarily on consumer behavioural biases, which could be further encouraged by aggressive pricing strategies such as quantity discounts.

Après avoir tiré les leçons de l’histoire des cycles économiques avant et après Keynes, les aspects méthodologiques relatifs à la mesure et à la modélisation des cycles font l’objet d’une description approfondie. Se centrant ensuite sur la France, l’ouvrage propose une détermination des dates des phases de récession et d’expansion de l’économie française depuis 1970. La méthodologie retenue est originale, mêlant approches économétriques et narrative, et permet d’obtenir une datation précise des points de retournement du cycle économique français.

Après avoir tiré les leçons de l'histoire des cycles économiques avant et après Keynes, les aspects méthodologiques relatifs à la mesure et à la modélisation des cycles font l'objet d'une description approfondie. Se centrant ensuite sur la France, l'ouvrage propose une détermination des dates des phases de récession et d'expansion de l'économie française depuis 1970. La méthodologie retenue est originale, mêlant approches économétriques et narrative, et permet d'obtenir une datation précise des points de retournement du cycle économique français.

Cet article propose une datation trimestrielle de référence des périodes de récession et d’expansion de l’économie française depuis 1970, réalisée par le comité de datation des cycles de l’Association française de science économique. La méthodologie repose sur deux piliers : 1) des estimations économétriques pour identifier les périodes candidates et 2) une approche narrative détaillant le contexte économique de l’époque pour finaliser la datation. De 1970 à 2019, quatre périodes de récession économique sont identifiées : les chocs pétroliers de 1974-1975 et 1980, le cycle d’investissement de 1992-1993 et la grande récession de 2008-2009. Pour la récession Covid, le pic est daté au dernier trimestre 2019 et le creux au deuxième trimestre 2020.

Motivated by a recent merger proposal in the French outdoor advertising market, we develop a model in which firms are initially endowed with some advertising capacities and compete on two fronts. First, firms compete to acquire additional advertising capacities on an upstream market; a first stage modeled as a second-price auction with externalities. Second, those firms, privately informed on their own costs, use their capacities on the downstream market to supply advertisers whose demand is random; a second stage modeled by means of mechanism design techniques. We study the linkages between the equilibrium outcomes on both markets. When a firm is endowed with more initial capacity, through the acquisition of a competitor for instance, whether it becomes more or less eager to acquire extra capacity on the upstream market depends a priori on fine details of the downstream market. Under reasonable choices of functional forms, we demonstrate that a downstream merger does not create any bias in the upstream market towards the already dominant firm. (C) 2020 Elsevier B.V. All rights reserved.