Kensei Nakamura

Education

• B.A. Hitotsubashi University, 2023

• M.A. Hitotsubashi University, 2025

Publication in Refereed Journals

1. Kensei Nakamura, Collective or individual rationality in the Nash bargaining solution: efficiency-free characterizations, Social Choice and Welfare, Volume 62, pages 629-642 (2024). Link

2. Kensei Nakamura, Step-by-step negotiations and the Nash bargaining solution: efficiency-free characterizations, Economics Letters, Volume 242, 111888 (2024). Link

3. Noriaki Kiguchi and Kensei Nakamura, Utilitarianism or egalitarianism? A new characterization of the mixed utilitarian-maximin social welfare orderings, Social Choice and Welfare, Forthcoming.  Link

Working Papers

1. Kensei Nakamura, When is it (im)possible to respect all individuals’ preferences under uncertainty? (2025). arXiv

• R&R, Games and Economic Behavior

2. Kensei Nakamura, Impartial utilitarianism on infinite utility streams (2025). arXiv

3. Kensei Nakamura and Shohei Yanagita, Cautious dual-self expected utility and weak uncertainty aversion (2025). arXiv

4. Kensei Nakamura, Social choice rules with responsibility for individual skills (2025). arXiv

5. Kensei Nakamura, Weak independence of irrelevant alternatives and generalized Nash bargaining solutions (2025). arXiv

6. Kensei Nakamura and Shohei Yanagita, Preferences with multiple forecasts (2025). arXiv

7. Leo Kurata and Kensei Nakamura, Collective decisions under uncertainty: efficiency, ex-ante fairness, and normalization (2025). arXiv

8. Yutaro Akita and Kensei Nakamura, Randomization and ambiguity perception (2025). arXiv

9. Kensei Nakamura and Shohei Yanagita, Partially rational preferences under ambiguity (2025). pdf

Work in Progress

1. Pareto* principles and robust collective decisions (joint with Leo Lurata)

2. Relative-fair preference aggregation under uncertainty: an ex-post approach (joint with Leo Kurata)

3. The coarse Nash bargaining solutions (joint with Satoshi Nakada)

4. Attitude toward ambiguous experiments (joint with Yutaro Akita and Shohei Yanagita)

etc.

Past Presentations

1. March 2024, Game Theory Workshop (Kyoto University), Moderating the Kalai-Smorodinsky bargaining solution.

2. May 2024, Japan Economic Association (JEA) Spring Meeting (Tokyo Keizai University), Utilitarianism or egalitarianism? A new characterization of the mixed utilitarian-maximin social welfare orderings.

3. July 2024, The 17th Meeting of  Society for Social Choice and Welfare (SSCW) (Paris School of Economics), Utilitarianism or egalitarianism? A new characterization of the mixed utilitarian-maximin social welfare orderings.

4. August 2024, Workshop (Aoyama Gakuin University), Relative-fair preference aggregation. 

5. September 2024, Economics and Game Theory Seminar (Tokyo University of Science), Relative-fair preference aggregation.

6. October 2024, Japan Economic Association (JEA) Autumn Meeting (Fukuoka University), Moderating the Kalai-Smorodinsky bargaining solution.

7. November 2024, Decision Theory Workshop (Nagasaki University), Cautious dual-self representations and weak uncertainty aversion. 

8. January 2025, Social Choice Theory Workshop (the University of Tokyo), Cautious dual-self expected utility and weak uncertainty aversion: a normative justification. 

9. March 2025, Game Theory Workshop (Kanazawa), Intrapersonal belief-selection games and weak uncertainty aversion. 

10. 2 May 2025, Seminar at Waseda University, Partially rational preferences under uncertainty.

11. 24 May 2025, , Japan Economic Association (JEA) Spring Meeting, Cautious dual-self expected utility and weak uncertainty aversion.

12. 27 May 2025, Online Social Choice and Welfare Seminar Series, When is it (im)possible to respect all individuals’ preferences under uncertainty?. 

13. 11 July 2025, Seminar at Ryukoku University, Randomization and ambiguity perception.

Upcoming Presentations

TBA