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Jayasri Dutta et Paul Seabright
Jean-Pierre Florens et James J. Heckman
Alexandre de Cornière et Greg Taylor
2026, à paraître
Cyberattacks are a pervasive threat in the digital economy, with the potential to harm firms and their customers. Larger firms constitute more valuable targets to hackers, thereby creating negative network effects. These can be mitigated by investments in security, which play both a deterrent and a...
James K. Hammitt
n° 26-1707, 2026
Weighted benefit-cost analysis is receiving increased attention as a method to incorporate concerns about the distribution of policy effects across individuals. Weights are intended to reflect interpersonal differences in the effect of income on wellbeing (the marginal utility of income) and the...
Céline Giner, Céline Nauges et Katherine Hassett
Philippe Bontems, Marie-Françoise Calmette et David Martimort
vol. 45, n° 100447, 2026, à paraître
Motivated by the forthcoming terminations of most highways concessions in France, we propose a versatile model of dynamic regulation and contract renewals that describes a long-term relationship between the public authority and an incumbent operator with private information about its costs that may...
Matti Liski et François Salanié
Jérôme Bolte, Tam Le, Eric Moulines et Edouard Pauwels
Motivated by the extensive application of approximate gradients in machine learning and optimization, we investigate inexact subgradient methods subject to persistent additive errors. Within a nonconvex semialgebraic framework, assuming boundedness or coercivity, we establish that the method yields...
Rossi Abi Rafeh, Pierre Dubois, Rachel Griffith et Martin O'Connell
We develop a dynamic equilibrium model of firm competition to analyze the effects of counterfactual policies, such as taxes and advertising restrictions, on pricing, advertising, consumption, and welfare. Using micro-level data, we estimate how consumer exposure to television commercials influences...
