Recherche avancée

Marc Bourreau, Bruno Jullien et Yassine Lefouili

2026, à paraître

We study the impact of horizontal mergers on the incentives of merging firms to invest in incremental innovation. We provide a decomposition of this impact that clarifies the various forces at work and the differences between demand-enhancing and cost-reducing innovation. Moreover, we derive...

Andreas Alfons, Aurore Archimbaud, Klaus Nordhausen et Anne Ruiz-Gazen

2026, 27 pages, à paraître

For multivariate data, tandem clustering is a well-known technique aiming to improve cluster identification through initial dimension reduction. Nevertheless, the usual approach using principal component analysis (PCA) has been criticized for focusing solely on inertia so that the first components...

Daniel L. Chen, Jiafeng Chen et Gregory Lewis

2026, à paraître

We provide some simple theoretical results that justify incorporating machinelearning in a standard linear instrumental variable setting, prevalent in empiri-cal research in economics. Machine learning techniques, combined with sample-splitting, extract nonlinear variation in the instrument that...

Marcel Boyer et Maria Kouyoumijian

U of Toronto Press, 2026, 200 pages, à paraître

Lucia Inchauste, Xavier de Lamballerie, Stéphane Priet, Maguin Gutierrez Cayuba, Adrian Juan Copajira, Raul Quispe Gutierrez, Sarah Alami, Jacob E. Aronoff, Kenneth Beutow, Daniel Cummings, Bret A. Beheim, Margaret Gatz, Suhail Ghafoor, Thomas S. Kraft, Amanda J. Lea, Wendy Mack, David E. Michalik, Katherine Sayre, Edmond Seabright, Jonathan Stieglitz, Gregory Thomas, Randall C. Thompson, Benjamin C. Trumble, Hillard Kaplan, Michael Gurven et Paul L. Hooper

vol. 404, n° 119493, septembre 2026

We report on the prevalence of and mortality from SARS-CoV-2 among the Tsimane and Moseten, two Indigenous subsistence groups in Bolivian Amazonia, and show that they evidence the lowest infection fatality rate ever reported. These populations have minimal access to medical care, a history of high...

André Grimaud, Gilles Lafforgue et Luc Rougé

vol. 267, n° 113070, août 2026

Degrowth is often advocated as a response to the climate crisis, but its consistency with growth theory remains unclear. We develop an endogenous growth model of directed technical change and climate in which the economy relies on both a polluting fossil resource and a clean renewable alternative....

Céline Bonnet et Catarina Goulão

vol. 403, n° 119425, août 2026

Ultra-processed food consumption is associated with obesity and chronic diseases, but its determinants are not well documented. This understanding is essential to inform policies aimed at improving public health. To this end, we construct a unique longitudinal dataset of French households’ food...

Amirreza Ahmadzadeh

n° 26-1764, juillet 2026

I study a dynamic principal–agent relationship in which an agent must exert costly effort to learn a privately observed bi-nary state before taking an action. The principal wants to match the action with the state, while the agent is biased toward one action, generating both a moral hazard (effort...

Philippe De Donder, Sadia Zohaib, Bertrand Achou, Franca Glenzer, Minjoon Lee et Marie-Louise Leroux

juillet 2026

This paper examines whether the changes in long-term care (LTC) preferences, saving behavior, and policy attitudes observed during the COVID-19 pandemic have persisted in the post-pandemic period. Using new survey data collected in 2023 from a representative sample of working-age individuals in...

M.J. Getz, Tianyu Cao, Jacob E. Aronoff, Carrie L. Jenkins, Suhail Ghafoor, J. Vazquez, N.T. Appel, Daniel Cummings, Paul L. Hooper, Bret A. Beheim, Kenneth Buetow, Caleb Finch, Daniel Eid Rodriguez, Randall C. Thompson, Jonathan Stieglitz, Michael Gurven, Hillard Kaplan et Benjamin C. Trumble

vol. 190, n° 3(e70309), juillet 2026

Cardiovascular disease (CVD) is the leading cause of death for women globally, and menopause is associated with elevated morbidity and mortality. The total impact of menopause on blood pressure remains inconclusive, with evidence largely based on data from industrialized populations. To address...