NEWS
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• 2026: RD Cooperation and Spillovers: Do Research Joint Ventures Improve Welfare?
  by Yassine Badra (PHEAAC, Université des Antilles, FR), Bertrand Chopard (LIRAES, Université Paris Cité, FR)
  and Huizhong Liu (Wenlan School of Business, Zhongnan University of Economics and Law, Wuhan, China).
  accepted for publication in Mathematical Social Sciences
  
  

• 2026: Misperception, Self-Reported Probabilities and Long Term Care Insurance Take-Up in the United States
  by Thomas Blavet (CES, Université Paris 1 Panthéon Sorbonne, FR), Bertrand Chopard (LIRAES, Université Paris Cité, FR), Thomas Rapp (LIRAES, Université Paris Cité, LIEPP Sciences Po, FR) and Jonathan Sicsic (LIRAES, Université Paris Cité, LIEPP Sciences Po, FR).

accepted for publication in International Journal of Health Economics and Management 

• 2026: in French La responsabilité médicale à l'ère de l'intelligence artificielle : une analyse microéconomique
  à lire sur le site du Collège des Economistes de la Santé, blog CES, collection Synthèse.
  
  

• Payment Design and Medical Liability: Implications for Healthcare Quality and Patient Selection

by Bertrand Chopard (LIRAES, Université Paris Cité, FR).
submitted

• Behavioral Determinants of Blood Donation: New Insights from the French Context
  by Maria Errea (Office of Health Economics in London, UK),  Bertrand Chopard (LIRAES, Université Paris Cité, FR) and Nicolas Sirven (The EHESP School of Public Health, FR).
  submitted

Available upon request, please contact bertrand.chopard@u-paris.fr

Recent working papers

• Guidelines, Courts and Medical Liability
  by Bertrand Chopard (LIRAES, Université Paris Cité, FR) and Ludivine Roussey (LIRAES, Université Paris Cité, FR).
  working paper being updated
  
  

• RD Cooperation and Spillovers: Do Research Joint Ventures Improve Welfare?
  by Yassine Badra (PHEAAC, Université des Antilles, FR), Bertrand Chopard (LIRAES, Université Paris Cité, FR)
  and Huizhong Liu (Wenlan School of Business, Zhongnan University of Economics and Law, Wuhan, China).
  Was presented at the International Conference on Public Economic Theory, 23 - 25 June, 2025, Lisbon, Portugal.
  Last presentation at the 2025 Annual Meeting of the Association of Southern European Economic Theorists, 30 October - 01 November, 2025, Morocco.
  
  

• Creditor Concerns in Lay Hands: The Influence of Non-Professional Courts on Post-Default Recovery Rates
  by Régis Blazy (University of Strasbourg, EM Strasbourg, Sciences Po Strasbourg and LARGE, FR), Bertrand Chopard (LIRAES, Université Paris Cité, FR) and Ludovico Maria Cocco (Ca' Foscari University Venice, IT).
  working paper being updated

Work in progress

• Balance Billing, Income Inequality, and Social Welfare
  by Yassine Badra (PHEAAC, Université des Antilles, FR) and Bertrand Chopard (LIRAES Univ. Paris Cité).

• Pretrial Settlement and Polarization of Beliefs in Medical Litigation
  by Bertrand Chopard (LIRAES Univ. Paris Cité, FR).