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Jeffrey A. Friedman

vol. 75, n° 2, avril 2023, p. 280–315

This article explains how leaders can use foreign policy issues to shape their personal images. It argues, in particular, that presidents and presidential candidates can use hawkish foreign policies to craft valuable impressions of leadership strength. This dynamic can give leaders incentives to...

Laurent Miclo

vol. 27, avril 2023, p. 515 – 557

The random mapping construction of strong stationary times is applied here to finite Heisenberg random walks over ℤM, for odd M ⩾ 3. When they correspond to 3 × 3 matrices, the strong stationary times are of order M6, estimate which can be improved to M4 if we are only interested in the convergence...

Jean Tirole

vol. 7, n° 4, avril 2023, p. 171–177

Should agencies confine their role to their main duty or should they embrace new and desirable societal objectives? This article first discusses two emblematic examples of mission expansion: socially responsible competition authorities and green central banks. It then sheds light on the ongoing...

Thomas Mariotti, Nikolaus Schweizer, Nora Szech et Jonas von Wangenheim

vol. 69, n° 4, avril 2023, p. 2182–2197

We study the optimal design of information nudges for present-biased consumers who make sequential consumption decisions without exact prior knowledge of their long-term consequences. For any distribution of risks, there exists a consumer-optimal information nudge that is of cutoff type,...

Michele Bisceglia

vol. 71, n° 1, avril 2023, p. 1–46

Consider a three-tier industry with a monopolist supplying a manufacturer which sells its product to final consumers through two retailers. Contracts are linear and secret. Hence, upon receiving an out-of-equilibrium offer, each retailer must form a belief about the identity of the deviating...

Eva Raiber, Weiwei Ren, Jeanne Bovet, Paul Seabright et Charlotte Wang

vol. 71, n° 3, avril 2023

In many societies, parents are involved in selecting a spouse for their child, integrating this with decisions about premarital investment such as education. Do spousal preferences of parents and children conflict? We estimate parents’ spousal preferences based on survey choices between random...

Francesca Barigozzi, Helmuth Cremer et Emmanuel Thibault

n° 23-1426, avril 2023

We present a simple dynamic model based on on-the-job human capital accumu- lation affecting the dynamic of wage rates and labor earnings. We show how these dynamics are determined by the interplay between the supply and demand sides of the labor market. The model can generate and explain the...

Jorge Peña, Aviad Heifetz et Georg Nöldeke

n° 23-152, avril 2023, révision octobre 2023

Cooperation usually becomes harder to sustain as groups become larger because incentives to shirk increase with the number of potential contributors to collective action. But is this always the case?Here we study a binary-action cooperative dilemma where a public good is provided as long as not...

Pascal Bégout et Jesus Ildefonso Diaz

vol. 3/4, n° 28, mars 2023, p. 311–340

Hillard Kaplan, Paul L. Hooper, Margaret Gatz, Wendy Mack, Meng Law, Helena Chui, Linda Sutherland, James Sutherland, Christophe J. Rowan, L. Samuel Wann, Adel H. Allam, Randall C. Thompson, David E. Michalik, Guido Lombardi, Michael I. Miyamoto, Daniel Eid Rodriguez, Adrian Juan Copajira, Raul Quispe Gutierrez, Bret A. Beheim, Edmond Seabright, Daniel Cummings, Sarah Alami, Angela Garcia, Kenneth Buetow, Caleb Finch, Gregory Thomas, Benjamin C. Trumble, Jonathan Stieglitz, Michael Gurven et Andrei Irimia

vol. 120, n° 13, mars 2023

Little is known about brain aging or dementia in nonindustrialized environments that are similar to how humans lived throughout evolutionary history. This paper examines brain volume (BV) in middle and old age among two indigenous South American populations, the Tsimane and Moseten, whose...