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Michel Moreaux et Jean-Pierre Amigues
n° 25-1638, avril 2025
The theme of the ’energy transition’ away from fossil fuels toward clean renewable energy has attracted a lot of attention in the context of climate change mitigation. However the emergence of a new energy system raises its own problems. An aggressive carbon pricing or a renewables subsidisation...
Gabriel Ulyssea, Matteo Bobba, Lucie Gadenne et Mariaflavia Harari
vol. 6, n° 2, avril 2025
Most low- and middle-income countries are characterised by a large informal sector, which implies that a substantial fraction of economic activity and livelihoods in these countries goes on completely unregulated. This has important implications for the behaviour of firms, workers, families, and...
Patrick Rey, Simon Loertscher et Leslie Marx
n° 25-1637, avril 2025
We develop the procurement analogue to an all-pay auction for an independent private values model with identical distributions. In this all-receive procurement auction (ARPA), suppliers simultaneously submit bids. Suppliers with bids below (above) the reserve are paid their bids (are paid and...
Helmuth Cremer et Georges Casamatta
n° 25-1636, avril 2025
We examine the optimal combination of direct and indirect taxes in the presence of tax avoidance. Our findings indicate that linear commodity taxes should be included in the optimal tax mix, even when they are subject to avoidance and when the conditions of the Atkinson-Stiglitz theorem hold. This...
Benoît Chevalier-Roignant, Stéphane Villeneuve, Fabien Delpech et May-Line Grapotte
n° 25-1635, avril 2025
There are many business situations in which investments by a supplier and a producer (“coinvest-ments") are both necessary for either of them to grasp a business opportunity. For instance, better quality tanks are needed to manufacture reliable hydrogen-powered vehicles. One of these two firms,...
Céline Nauges, Sarah Ann Wheeler et Quentin R. Grafton
n° 24-1634, avril 2025
The allocation of water across space and time is a key challenge of water governance, with demand and supply often not well matched over time and place. Best practice water pricing and markets may promote water conservation, yet their application is limited. We highlight the governance principles...
Philippe De Donder, David Bardey et Vera Zaporozhets
vol. 4, n° 26, avril 2025
We review the medico-economic literature assessing the economic value of diagnostic and prognostic tests, with a focus on innovative and, more specifically, companion tests. Our analysis begins with a summary of systematic reviews that provide a descriptive synthesis of existing findings rather...
André Grimaud et Luc Rougé
n° 25-1633, avril 2025
Technical progress is considered a key element in the ght against climate change. It may take the form of technological breakthroughs, that is, shocks that induce signicant leaps in the stock of knowledge. We use an endogenous growth framework with directed technical change to analyze the climate...
Abdelaati Daouia et Gilles Stupfler
n° 25-1632, avril 2025
The use of quantiles forms the basis of the overwhelming majority of current risk management procedures. Yet, there exist alternative instruments of risk protection that are not (unlike quantiles) based solely on the frequency of tail observations and instead take their severity into account, while...
Philippe De Donder, Humberto Llavador, Stefan Penczynski, John E. Roemer et Roberto Vélez
avril 2025
The vaccination game exhibits positive externalities. The standard game-theoretic approach assumes that parents make decisions according to the Nash protocol, which is ndividualistic and non-cooperative. However, in more solidaristic societies, parents may behave cooperatively, optimizing according...
