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Cécile Aubert, Yann Raineau, and Marc Raynal
2026, forthcoming
Decision Support Systems (DSS) with embedded best management practices help reduce pesticide use. However, costly experimentation is necessary to learn about the quality of their data processing and recommendation models. We study farmers’ choices to try such a DSS. Due to order effects, learning...
Romain Espinosa, and Nicolas Treich
We provide a non-anthropocentric rationale for implementing a levy on meat consumption due to animal-welfare considerations. It operates as a Pigouvian tax and addresses externalities on farmed animals. Under total utilitarianism, the levy is a subsidy when an animal’s life is worth living, and a...
Doh-Shin Jeon, Yassine Lefouili, and Leonardo Madio
We study a platform’s incentives to remove IP-infringing products and the effects of holding the platform liable for such infringements on innovation and welfare. We first show that platform liability can lead to either higher or lower commission rates, depending on how screening affects...
Andreea Enache, and Andrew Rhodes
We consider a setting in which a platform matches buyers and sellers, who then wish to transact with each other multiple times. The platform charges fees for hosting transactions but also offers convenience benefits. We consider two scenarios. In one scenario, all transactions must occur on the...
Andrew Rhodes, and Jidong Zhou
Jean Tirole, and Roland Bénabou
2026, 59 pages, forthcoming
We analyze how private decisions and optimal public policies are shaped by personal and societal preferences, material incentives, and social norms. We show how honor and stigma interact with incentives and derive optimal taxation. We then analyze the expressive role of law as embodying society’s...
Sai Bravo-Melgarejo, and Carole Haritchabalet
A labeling system for green gases, such as green hydrogen and bio-methane, could enable retailers to leverage consumers’ willingness to pay for environmental quality while promoting the adoption of these cleaner alternatives. However, the significant cost gap between green and conventional gases...
Fabrice Collard, Frédéric Boissay, Jordi Galì, and Cristina Manea
Pierre Dubois, and Gökçe Gökkoca
Antimicrobial resistance (AMR) increases healthcare costs, hospital stays, and mortality. This study examines how AMR affects antibiotic prescribing for cystitis in France (2002–2019), using data from general practitioners. A decision model is developed to capture prescribing behavior with and...
Christian Gollier
Because of risk aversion, any sensible investment valuation system should value less projects that contribute more to the aggregate risk. In theory, this is done by adjusting discount rates to consumption betas. But in reality, most public institutions use a dis-count rate that is rather...
