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Sébastien Gadat, Bernard Bercu, Jérémie Bigot et Emilia Siviero
n° 21.1231, juillet 2021
We introduce a new second order stochastic algorithm to estimate the entropically regularized optimal transport cost between two probability measures. The source measure can be arbitrary chosen, either absolutely continuous or discrete, while the target measure is assumed to be discrete. To solve...
Susan Perry, Alecia Carter, Marco Smolla, Erol Akçay, Sabine Noebel, Jacob Foster et Susan Healy
vol. 376, n° 1828, juillet 2021
Innovation—the combination of invention and social learning—can empower species to invade new niches via cultural adaptation. Social learning has typically been regarded as the fundamental driver for the emergence of traditions and thus culture. Consequently, invention has been relatively...
Claire Borsenberger, Helmuth Cremer, Denis Joram, Jean-Marie Lozachmeur et Estelle Malavolti
n° 21-1230, juillet 2021
We study the design of environmental policy in the e-commerce sector and examine two main questions. First, what is the appropriate level of intervention along the value chain. Second, which instruments should be used at a specic level in the vertical chain? We consider a model with two retailers/...
Catarina Goulão et Agustín Pérez-Barahona
n° 21-1236, juillet 2021, révision juin 2023
We look at how social norms regarding health affect the dynamics of an epi-demic of non-communicable chronic diseases (NCDs). We present an overlapping generations model in which agents live for three periods (childhood, adulthood and old age). Adulthood consumption choices have an impact on the...
Stefan Ambec et Jessica Coria
vol. 199, n° 104439, juillet 2021
We propose informational spillovers as a new rationale for the use of multiple policy instruments to mitigate a single externality. We investigate the design of a pollution standard when the firms’ abatement costs are unknown and emissions are taxed. A firm might abate pollution beyond what is...
Pierre Dubois et Tuba Tuncel
vol. 78, n° 102461, juillet 2021
We investigate how the prescribing behavior of physicians reacts to scientific information and recommendations released by public authorities. Taking the example of antidepressant drugs, we use French panel data on exhaustive prescriptions made by a representative sample of general practitioners to...
Xavier D'Haultfoeuille, Christophe Gaillac et Arnaud Maurel
vol. 12, n° 3, juillet 2021, p. 817–842
In this paper, we build a new test of rational expectations based on the marginal distributions of realizations and subjective beliefs. This test is widely applicable, including in the common situation where realizations and beliefs are observed in two dierent datasets that cannot be matched. We...
Manvir Singh, Alberto Acerbi, Christine Caldwell, Etienne Danchin, Guillaume Isabel, Lucas Molleman, Thom Scott-Philips, Monica Tamariz, Pieter Van der Berg, Edwin Van Leeuwen et Maxime Derex
Cultural evolution requires the social transmission of information. For this reason, scholars have emphasized social learning when explaining how and why culture evolves. Yet cultural evolution results from many mechanisms operating in concert. Here, we argue that the emphasis on social learning...
Sreemati Mitter
vol. 50, n° 3, juillet 2021, p. 39–42
This essay attempts to rectify the silence about the willful expropriation, by British and Israeli forces, of private Palestinian financial assets. Placing at its core the stories of ordinary Palestinians, it explores how they were robbed of their bank accounts, bonds, stocks, pensions, salaries,...
Johannes Hörner et Nicolas Lambert
vol. 88, juillet 2021, p. 1892–1935
Performance evaluation (“rating”) systems not only provide information to users but also motivate the rated worker. This article solves for the optimal (effort-maximizing) rating within the standard career concerns framework. We prove that this rating is a linear function of past observations. The...
