Publications

La plupart des informations présentées ci-dessous ont été récupérées via RePEc avec l'aimable autorisation de Christian Zimmermann
What Drives European Football Clubs’ Stock Returns and Volatility?Journal articleCéline Gimet et Sandra Montchaud, International Journal of the Economics of Business, Volume 23, Issue 3, pp. 351-390, 2016

The article studies the main determinants of European football clubs’ stock returns and volatility. A panel-data analysis of a sample of 24 European football clubs was conducted to test the influence of several variables, based on a matrix of internal/external and real/financial dimensions, on both stock returns and their volatility. The results show that clubs’ stock returns are influenced by the real and financial context and by a set of internal variables such as profit considered as a reflection of accounting discipline, capitalization as an indicator of size and stadium attendance as a proxy indicator of reputation. The volatility of stock returns seems particularly vulnerable to the overall instability on stock markets and dependent on clubs’ profit and net players’ transfers and, to a lesser extent, on sporting outcomes.

FavoritismJournal articleYann Bramoullé et Sanjeev Goyal, Journal of Development Economics, Volume 122, Issue C, pp. 16-27, 2016

Favoritism refers to the act of offering jobs, contracts and resources to members of one's own social group in preference to others who are outside the group. This paper examines the economic origins and the consequences of favoritism.

The impact of a ‘soda tax’ on prices: evidence from French micro dataJournal articleNicoletta Berardi, Patrick Sevestre, Marine Tépaut et Alexandre Vigneron, Applied Economics, Volume 48, Issue 41, pp. 3976-3994, 2016

Based on an original data set of more than 500,000 non-alcoholic beverage price records, we evaluate the impact on consumer prices of the ?soda tax?, an excise on drinks with added sugar or sweetener, introduced in France in January 2012. We adopt a difference in differences approach and find that the tax was gradually passed through to the prices of the taxed beverages. After 6 months of its introduction, it was fully shifted to soda prices and almost fully shifted to the prices of fruit drinks, while the pass-through for flavoured waters was incomplete. We also find that the pass-through was heterogeneous across brands and retail groups.

Productivity Trends in Advanced Countries between 1890 and 2012Journal articleAntonin Bergeaud, Gilbert Cette et Rémy Lecat, Review of Income and Wealth, Volume 62, Issue 3, pp. 420-444, 2016

In order to examine productivity waves and convergence processes, we study productivity trends, trend breaks, and levels for 13 advanced countries between 1890 and 2012. We highlight two productivity waves, a big one following the second industrial revolution and a smaller one following the ICT revolution. The convergence process has been erratic, halted by inappropriate institutions, technology shocks, financial crises, and above all wars, which led to major productivity level leaps, downwards for countries experiencing war on their soil, and upwards for other countries. Productivity trend breaks have been identified following wars, global financial crises, global supply shocks, and major policy changes. The upward trend break for the U.S. in the mid-1990s has been confirmed, as has the downward trend break for the euro area in the same period.

Dynamic pricing with reference price dependenceJournal articleRégis Chenavaz, Economics - The Open-Access, Open-Assessment E-Journal, Volume 10, Issue 2016-22, pp. 1-17, 2016

A firm that accounts for consumer behavior sets the selling price of a product considering the reference price of consumers. In the literature, a reference price is usually modeled as depending on past selling prices. That is, past selling prices implicitly constrain the current selling price of a product. In this article, the author explicitly measures this constraint with an optimal control framework. He works on the structural properties of a general demand function, which depends on both selling and reference prices. Analytical results prove the following claims. Adjusting reference prices effects increase the price elasticity of demand, the demand function becoming flatter. Thus, the reference price effect weakens the market power of the firm. Also, the reference price effect constitutes a main driver of the dynamics of the selling price. But contrary to intuition, selling price dynamics does not systematically imitate reference price dynamics.

Fluid Intelligence and Cognitive Reflection in a Strategic Environment: Evidence from Dominance-Solvable GamesJournal articleNobuyuki Hanaki, Nicolas Jacquemet, Stéphane Luchini et Adam Zylbersztejn, Frontiers in Psychology, Volume 7, 2016

Dominance solvability is one of the most straightforward solution concepts in game theory. It is based on two principles: dominance (according to which players always use their dominant strategy) and iterated dominance (according to which players always ...

Is the French palliative care policy effective everywhere? Geographic variation in changes in inpatient death rates among older patients in France, 2010–2013Journal articleWilliam B. Weeks, Bruno Ventelou et Marc Karim Bendiane, Annals of Palliative Medicine, Volume 5, Issue 4, pp. 242-247, 2016

Background:
Recently, French policymakers have tried to improve care at the end-of-life, by improving access to community-based palliative care, particularly for patients with cancer and neurological diseases. If effective, these efforts should reduce the proportion of such patients who die in the hospital. In light of these policies, we sought to determine the effectiveness of these efforts on reducing inpatient deaths by conducting a retrospective, observational analysis of patients aged 65 and older who were admitted to hospitals in France between 2010 and 2013 for 1 of 3 non-surgical conditions.

Methods:
We calculated department-specific age- and sex-adjusted inpatient death rates for 3 types of non-surgical admissions and modeled expected number of inpatient deaths had their rates for patients with cancer or neurological disease tracked those of patients with non-cancer non-neurological diseases.

Results:
We found that patients admitted with a cancer diagnosis experienced 20,394 (13.0%) fewer inpatient deaths that expected had non-surgical cancer diagnosis admission rates tracked those of non-surgical non-cancer and non-neurological admission rates; patients admitted with a primary neurological disease diagnosis experienced 513 (4.5%) fewer inpatient deaths than expected. During the study period, observed-to-expected inpatient deaths fell more dramatically and consistently for patients admitted with cancer diagnoses than for those admitted with neurological diseases. Observed-to-expected ratios fell least in departments that were on the periphery of the French mainland.

Conclusions:
Our findings suggest that, in France, efforts to reduce inpatient death rates among patients with cancer or neurological disease diagnoses appear to be effective. However, their effectiveness varies geographically, suggesting that targeted efforts to improve lower performing departments may generate substantial performance improvements.

Robust Social DecisionsJournal articleEric Danan, Thibault Gajdos, Brian Hill et Jean-Marc Tallon, American Economic Review, Volume 106, Issue 9, pp. 2407-25, 2016

We propose and operationalize normative principles to guide social decisions when individuals potentially have imprecise and heterogeneous beliefs, in addition to conflicting tastes or interests. To do so, we adapt the standard Pareto principle to those preference comparisons that are robust to belief imprecision and characterize social preferences that respect this robust principle. We also characterize a suitable restriction of this principle. The former principle provides stronger guidance when it can be satisfied; when it cannot, the latter always provides minimal guidance.

Organization and export performanceJournal articleGrigorios Spanos, Economics Letters, Volume 146, Issue Supplement C, pp. 130-134, 2016

This paper presents new facts on firms’ internal organization and their export performance. I find an ordering of the distribution of organizations and, both across and within firms, firms’ number of layers is positively correlated with their export performance.

Are insolvent firms being kept afloat by excessively low interest rates?Journal articleSanvi Avouyi-Dovi, Rémy Lecat, Charles O’Donnell, Benjamin Bureau et Jean-Pierre Villetelle, Rue de la Banque, Issue 29, 2016

Since the crisis, interest rates on bank loans to firms have fallen sharply, but have also become more widely dispersed. This indicates that banks are discriminating more in the credit market on the basis of borrower risk. Lending to struggling firms at low interest rates remains rare. This tends to suggest there has been no significant rise in zombie lending, i.e. the provision of loans at artificially low interest rates to help keep otherwise insolvent companies afloat.