Recherche avancée

Jérôme Bolte et Edouard Pauwels

avril 2020, p. 1–33

Modern problems in AI or in numerical analysis require nonsmooth approaches with a exible calculus. We introduce generalized derivatives called conservative fields for which we develop a calculus and provide representation formulas. Functions having a conservative field are called path...

Pascal Bégout

vol. 2020, n° 39, 28 avril 2020, p. 1–18

Gonçalo Faria et Andy Gardner

vol. 16, n° 3, mars 2020

Genetic relatedness is a key driver of the evolution of cooperation. One mechanism that may ensure social partners are genetically related is kin discrimination, in which individuals are able to distinguish kin from non-kin and adjust their behaviour accordingly. However, the impact of kin...

Cécile Aubert et Arnaud Reynaud

vol. 45, n° 1, mars 2020, p. 36–74

We conducted an artefactual field experiment in Vietnam to investigate whether and how experiencing a natural disaster affects individual attitudes toward risks. Using experimental and real household data, we show that households in villages affected by a flood in recent years exhibit more risk...

Sarah Alami, Christopher Von Rueden, Edmond Seabright, Thomas S. Kraft, Aaron D. Blackwell, Jonathan Stieglitz, Hillard Kaplan et Michael Gurven

vol. 287, n° 1922, mars 2020

High social status is often associated with greater mating opportunities and fertility for men, but do women also obtain fitness benefits of high status? Greater resource access and child survivorship may be principal pathways through which social status increases women's fitness. Here, we examine...

Karine Van Der Straeten, Christopher Anderson, Luc Arrondel, André Blais, Jean-François Daoust et Jean-François Laslier

vol. 1, n° 18, mars 2020, p. 91–110

It is widely assumed that celebrities are imbued with political capital and the power to move opinion. To understand the sources of that capital in the specific domain of sports celebrity, we investigate the popularity of global soccer superstars. Specifically, we examine players’ success in the...

Han Bleichrodt, David Crainich, Louis Eeckhoudt et Nicolas Treich

vol. 89, mars 2020, p. 137–149

Diagnostic tests allow better informed medical decisions when there is uncertainty about a patient’s health status and, therefore, about the desirability to undertake treatment. This paper studies the relation between the expected value of diagnostic information and a patient's risk aversion. We...

Sylvie Borau et Jean-François Bonnefon

vol. 120, mars 2020, p. 498–508

Hanna Halaburda, Bruno Jullien et Yaron Yehezkel

vol. 51, mars 2020, p. 3–31

We consider dynamic competition among platforms in a market with network externalities. A platform that dominated the market in the previous period becomes “focal” in the current period, in that agents play the equilibrium in which they join the focal platform whenever such equilibrium exists. Yet...

Céline Nauges et Jean-Paul Chavas

vol. 42, n° 1, mars 2020, p. 42–53

Adoption of agricultural innovations has been an important factor affecting the welfare of farmers, the productivity of agriculture and the economics of the food sector. This paper reviews the literature on technology adoption in agriculture with a focus on the role of uncertainty and learning. It...