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Emeric Henry
Toulouse, janvier 2026, révision 10 juin 2026, Toulouse
Marshall Van Alstyne
Flavio Pino
Simon P. Anderson
Kevin Ducbao Tran
Xintong Han
Perrin Lefebvre et David Martimort
n° 26-1706, janvier 2026
This paper develops a model of niche lobbying in which interest groups endogenously specialize in the acquisition of distinct types of policy-relevant information. Contrary to the view that niche strategies are chosen to soften competition and secure autonomy, we show that specialization arises as...
Louise Guillouet et David Martimort
n° 26-1705, janvier 2026
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....
