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David Martimort et Aggey Simons (Semenov)
n° 26-1704, janvier 2026
We study a repeated buyer-seller relationship with persistent adverse selection and one-sided enforcement, where a prepaid seller can breach by taking the money and running. The optimal stationary contract depends on enforcement strength and the discount factor. Three regimes arise. With a strong...
David Bardey, Philippe De Donder et Marie-Louise Leroux
janvier 2026
We study a situation where physicians differing in their degree of altruism exert a diagnostic effort before deciding whether to test patients to determine the most appropriate treatment. The diagnostic effort generates an imperfect private signal of the patient’s type, while the test is perfect....
Simon Fan, Yu Pang et Pierre Pestieau
janvier 2026, 32 pages
This paper analyzes the effect of longevity on parenting choices from a life course perspective. We develop an overlapping generations model to address a core tradeoff that young parents face when investing in their children’s human capital. They can choose a low-time-cost demanding strategy that...
Tristan Earle Grupp, Prakash Mishra, Mathias Reynaert et Arthur Van Benthem
janvier 2026, à paraître
The European Union designates 26% of its landmass as protected areas, limiting economic development for biodiversity. We use the staggered introduction of protected areas between 1985 and 2019 to study the selection of protected land and the causal eect of protection on vegetation cover and...
n° 26-1703, janvier 2026
Alex Smolin
Toulouse, janvier 2026, Toulouse
Doh-Shin Jeon
Renjie Bao (Princeton University)
Benoît Chevalier-Roignant et Stéphane Villeneuve
n° 26-1702, janvier 2026
We study the effect of upstream competition and supply shocks on a buyer’s investment decisions, under demand uncertainty. Imperfect upstream competition leads to double marginalization. This effect is mitigated if the supplier pool is larger (when production costs are linear or in case of...
Koen Jochmans
n° 26-1701, janvier 2026
Inference procedures for dyadic data based on two-way clustering rely on the data being exchangeable and dissociated. In particular, observations must be independent if they have no index in common. In an effort to relax this we consider, instead, data where Yij and Ypq can be dependent for all...
