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Home > Research > Seminars and Meetings > External Research Seminars

External Seminar

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2021-2022


Upcoming seminars 2021-2022

  • December 6, 11.00
    Alfred Galichon (New York University)
    - "Inference in Matching Markets via Generalized Linear Models and Beyond"

  • April 11,11.00
    Michael Burda (Humboldt Universität zu Berlin)
    - "TBA"

Past seminars 2021-2022

  • November 15,11.00
    Etienne Billette de Villemeur (Université de Lille)
    - "Assessing Inequality Assessments:A General Representation of Inequality Indices"

Abstract

We propose a unifying representation of all normalized inequality indices, regardless of their properties. The key concept behind our results is that of negative extreme transfers (NETs), which are transfers from the poorest individuals to the richest individuals. This concept alone is rich enough to describe the entire space of income distributions. Indeed, our first result (Lemma 1) is that any income distribution can be obtained as an expansion from the equal distribution by applying a sequence of NETs. In other words, NETs constitute a mathematical basis of the space of income distributions. Our main representation theorem (Theorem 1) builds upon the NET decomposition of income distributions to describe any given inequality index based on the weight it attaches to all possible NETs. Accordingly, desirable properties (axioms) of inequality indices translate into properties of the weight function that are easy to check. We express well-known inequality indices according to this decomposition. We define the λ -NET Criterion, the requirement that the weighting function is greater than some parameter λ >0 . The stringency of the λ -NET Criterion filters out inequality indices as λ increases, so that one can therefore rank inequality measures on the basis of the λ -NET Criterion they satisfy. According to this ranking, we find that the Pietra index is the unique measure to satisfy the maximal λ.

  • October 11,11.00
    Pierre Dubois (Toulouse School of Economics)
    - "Bargaining and International Reference Pricing in the Pharmaceutical Industry"

Abstract

The United States spends twice as much per person on pharmaceuticals as European countries, in large part because prices are much higher in the US. This fact has led policymakers to consider legislation for price controls. This paper assesses the effects of a US reference pricing policy that would cap prices in US markets by those offered in reference countries as proposed in the H.R.3 Lower Drug Costs Now Act of 2019. We estimate a structural model of demand and supply for pharmaceuticals in the US and reference countries like Canada where prices are set through a negotiation process between pharmaceutical companies and the government. We then simulate the counterfactual international reference pricing equilibrium, allowing firms to internalize the cross-country externalities introduced by this policy. We find that such a policy results in a slight decrease in US prices and a substantial increase in reference countries prices. The magnitude of these effects depends on the number, size and market structure of references countries. Overall, we find modest consumer welfare gains in the US but substantial losses in reference countries suggesting that this policy may not be the best way to introduce price controls in the US.

  • September 14, 11.00
    Friederike Mengel (University of Essex)
    - "Non-Bayesian Statistical Discrimination"

Abstract

Models of statistical discrimination typically assume that employers make rational inference from (education) signals. However, there is a large amount of evidence showing that most people do not update their beliefs rationally. We use a model and two experiments to show that employers who are conservative, in the sense of signal neglect, discriminate more against disadvantaged groups than Bayesian employers. We find that such irrational statistical discrimination deters high-ability workers from disadvantaged groups from pursuing education, further exacerbating initial group inequalities. Excess discrimination caused by employer conservatism is especially important when signals are very informative. Out of the overall hiring gap in our data, around 40% can be attributed to rational statistical discrimination, a further 40% is due to irrational statistical discrimination, and the remaining 20% is unexplained or potentially taste-based.


Past External Seminars (all years)


Agenda

séminaire

  • Monday 19 September 2016 11:30-13:00 - Fabrice Le Lec - Université Paris-1 Panthéon-Sorbonne

    SER Fabrice Le Lec

    Résumé : This paper aims at testing how the context of choice (information and set of alternatives) a ects individuals’ decisions. In particular, it tests the existence of choice overload, understood as the fact that when faced with many alternatives, decision makers experience some cognitive overload that impacts their decision. To do so, we rst propose a model of choice overload: its core idea is that the richer the context of choice, the more confused or uncertain the decision maker is about the subjective values of the various alternatives. Pure choice overload would then be triggered by the presence of many alternatives while information overload is related to the quantity of information available. One of the main consequences of this model is that familiar
    goods, i.e. goods the individual has already experienced, should be preferred more often in the presence of choice overload. The frequency with which familiar alternatives are preferred to unfamiliar ones hence provides a behavioral measure of choice or information overload. We use this theoretical approach to devise an experiment where we systematically vary the level of information and the number of alternatives proposed to subjects, in order to rst test the existence and strength of choice overload, and then to study its sources (information or choice set). Our results show quite unambiguously that individuals are prone to overload in the presence of larger choice sets, but that information has a small impact, if any.

    Lieu : GATE-LSE - Seminar Room (Ecully)


  • Monday 10 October 2016 10:00-11:30 - Pandelis Perakakis - University of Granada

    SER Pandelis Perakakis

    Résumé : Scientific dissemination and evaluation
    We are so used to journal names and impact factors that we rarely question whether this is the most efficient quality assessment system. Do we still need journals, and what for? Are there any alternatives? Can we imagine a more fast and efficient scholarly communication model? What role can University libraries play in this alternative model? In this talk, I will present existing alternative ways to make research public and receive recognition for it, and try to stimulate a discussion about the role of researchers and librarians in the future of scientific dissemination and evaluation.

    Lieu : GATE-LSE - Amphithéâtre (Ecully)


  • Monday 9 January 2017 11:30-13:00 - Elisabet Viladecans-Marsal - University of Barcelona

    SER Elisabet Viladecans-Marsal

    Lieu : GATE-LSE - Amphithéâtre (Ecully)


  • Monday 6 February 2017 11:30-13:00 - Olivier Armantier - Fed, NY

    SER Olivier Armantier

    Lieu : GATE-LSE - Amphithéâtre (Ecully)


  • Monday 15 May 2017 11:30-13:00 - Marielle Brunette & Stéphane Couturier - INRA

    SER Marielle Brunette & Stéphane Couturier

    Lieu : GATE-LSE - Amphithéâtre (Ecully)


  • Monday 3 July 2017 11:30-12:45 - Chloé Tergiman - Penn State University

    Joint Seminar GATE-GATELAB

    Résumé : "Preferences for power"

    Lieu : Amphi Ecully


  • Monday 11 September 2017 14:00-14:30 - Robert Dur - Erasmus University Rotterdam

    External Seminar GATE-LSE, Ecully

    Lieu : Ecully - Seminar room


  • Wednesday 13 September 2017 11:30-12:45 - Nina Guyon - National University of Singapore

    External Seminar GATE-LSE, Ecully

    Lieu : Ecully - Seminar room

    Notes de dernières minutes : [*[note unusual schedule]*]


  • Monday 25 September 2017 11:30-12:45 - Mathieu Couttenier - University of Geneva

    External Seminar

    Lieu : Ecully - Seminar room


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