Research

Last update: May 10, 2024

Do you dare to say who is representative of your children? I don’t. All of my kids are representative. So are my papers. (Yasuo Uekawa, Economist, 1925-1993; Makoto Tawada, a former colleague of mine, once told me this story, and I do love it.)

Research Interests:

Industrial Organization; Competition Policy; Applied Microeconomics; Empirical Microeconomics

Working Papers:

1.  Commodity Taxation, Quality Choice, and Pass-Through under Imperfect Competition (with N. Doi; current draft: October 2023)

• Presentation Slides (November 2023)

2.  Understanding Pass-Through under Imperfect Competition: An Introduction (current draft: August 2023)

• Presentation Slides (August 2023)

3.  A Microfoundation for the Conduct Parameter Approach: Game Theory is Not Necessary to Introduce Imperfect Competition in Economics  (current draft: May 2023)

• Presentation Slides (August 2023)

4.  Do No-Surcharge Rules Increase Effective Retail Prices? (with M. J. Tremblay; current draft: July 2023)  

• Presentation Slides (February 2023)

5.  Incomplete Vertical Integration: Evidence from the U.S. Carbonated Soft Drink Industry (current draft: October 2020)

6.  On the Possibility of an Unsuccessful Merger: Implications from Stock Market and Retail Scanner Data (current draft: July 2017)

7.  Vertical Integration and Common Agency: An Empirical Analysis of the U.S. Carbonated Soft Drink Industry (current draft: July 2017)

Peer-Reviewed Articles:

1.  Platform Oligopoly with Endogenous Homing: Implications for Mergers and Free Entry (with S. Sato and M. J. Tremblay), Journal of Industrial Economics, Vol. 71, No. 4 (December 2023), 1203-1232.

• Please replace the last two pages by this file as some unnecessary pieces of information were not deleted regardless of our repeated requests. We sincerely apologize for this terrible inconvenience. 

• Presentation Slides (November 2, 2022)

• News Release at EurekAlert! (November 22, 2023),  News Release at phys.org (November 23, 2023)

2.  Cournot Platform Competition with Mixed-Homing (with S. Sato and M. J. Tremblay), International Journal of Industrial Organization, Vol. 91 (December 2023), Article 103002.

• Please replace pages 9, 16, and 17 by this file as some typos still remain in the published version. We sincerely apologize for this terrible inconvenience. 

• Presentation Slides  (May 20,  2023)

3.  A Sufficient Statistics Approach for Welfare Analysis of Oligopolistic Third-Degree Price Discrimination, International Journal of Industrial Organization, Vol. 86 (January 2023), Article 102893. 

• Online Appendices (September 7, 2022)

• Presentation Slides (September 7, 2022)

• @EARIE-News' tweet (November 28, 2022)

• Featured in the IJIO Summary Series (February 8, 2023)

• GSM (of Kyoto U) Research News (May 13, 2023)

4.  Chicago Price Theory Meets Imperfect Competition: A Common Ownership Approach (with L. Bao), Economics Bulletin, Vol. 42, No. 4 (December 2022), pp. 1848-1857.

• Presentation Slides (November 27, 2020)

5.  Pass-Through, Welfare, and Incidence under Imperfect Competition (with M. Fabinger), Journal of Public Economics, Vol. 211 (July 2022), Article 104589.  

• Typo Alert: In the fourth line of Subsection 2.1, $q_j(\mathbf{p})$ should be replaced by $q_i(\mathbf{p})$.

• Corrigendum (November 8, 2023)

• Online Appendices (November 8, 2023)

• Presentation Slides (March 10, 2020)

• Poster (January 15, 2018) 

• @JPubEcon's tweet (July 22, 2022), News Release at EurekAlert! (July 25, 2022), News Release at Newswise (July 26, 2022), News Release at phys.org (July 27, 2022), Kyoto University Research  News (July 28, 2022)

6.  Business-to-Business Bargaining in Two-Sided Markets (with M. J. Tremblay), European Economic Review, Vol. 130 (November 2020), Article 103591. 

• Presentation Slides (November 13, 2019)

7.  A Generalization of the Dorfman-Steiner Formula: Advertising Spillovers under Imperfect Competition, Economics Bulletin, Vol. 40, No. 2 (May 2020), pp.1300-1307.

8.  Hong and Li Meet Weyl and Fabinger: Modeling Vertical Structure by the Conduct Parameter Approach, Economics Letters, Vol. 186 (January 2020), Article 108732.

9.  Gender Differences in Entrepreneurship and Intrapreneurship: An Empirical Analysis (with T. Hisada), Small Business Economics, Vol. 48, No. 3 (March 2017), pp.447-486. [JSTOR Link] 

• Presentation Slides (July 15, 2016)

• Online Appendix, Stata Do file, and the Consent form for use of the dataset (updated on September 28, 2017) 

10.  Endogenous Product Boundary (with T. Ebina and M. Hanazono), The Manchester School, Vol. 85, No. 1 (January 2017), pp.13-40.

11.  Log-Linear Demand Systems with Differentiated Products Are Inconsistent with the Representative Consumer Approach (with T. Ebina), Economics Bulletin, Vol. 36, No. 1 (February 2016), pp.260-267.

12.  Cost Pass-Through and Inverse Demand Curvature in Vertical Relationships with Upstream and Downstream Competition (with T. Ebina), Economics Letters, Vol. 124, No. 3 (September 2014), pp.465-468. 

• Corrigendum (January 15, 2016)

13.  Estimating Noncooperative and Cooperative Models of Bargaining: An Empirical Comparison (with M. Mitsutsune), Empirical Economics, Vol. 47, No. 2 (September 2014), pp.669-693. 

• Data and Matlab Codes: Noncooperative; Nash; Shapley-Shubik (Party Majority; Parliament Majority); Robustness 1 (Noncooperative, Nash, Shapley-Shubik); Robustness 2 (Noncooperative, Nash, Shapley-Shubik)

14.  Political Accountability, Electoral Control, and Media Bias (with Y. Hizen), Japanese Economic Review, Vol. 65, No. 3 (September 2014), pp.316-343.

15.  The Welfare Effects of Third-Degree Price Discrimination in a Differentiated Oligopoly (with N. Matsushima), Economic Inquiry, Vol. 52, No. 3 (June 2014), pp.1231-1244. 

• Supplementary Material 

16.  Complementing Cournot’s Analysis of Complements: Unidirectional Complementarity and Mergers (with T. Ebina), Journal of Economics, Vol. 111, No. 3 (April 2014), pp.239-261. [JSTOR Link] 

• Typo Alert: $h(1-c_A )<1+(h-(1+c_A)/2)/2$ before Proposition 2 should be read: $h<1+ (h-(1+c_A)/2)/2$.

17.  Double Marginalization and Cost Pass-Through: Weyl-Fabinger and Cowan Meet Spengler and Bresnahan-Reiss (with T. Ebina), Economics Letters, Vol. 122, No. 2 (February 2014), pp.170-175.

18.  Third-Degree Price Discrimination, Consumption Externalities, and Market Opening (with T. Okada), Journal of Industry, Competition and Trade, Vol. 13, No. 2 (June 2013), pp.209-219. 

19.  An Economic Analysis of Add-on Discounts (with T. Ebina), Managerial and Decision Economics, Vol. 33, No. 2 (March 2012), pp.99-107. [JSTOR Link]

20.  Endogenous Participation Costs and Equilibrium Abstention in Voting with Complete Information: A Three-Player Case, Economics Bulletin, Vol. 30, No. 4 (November 2010), pp.3026-3032. 

21.  Ownership Structure as a Continuous Variable: A Note on Joint Ownership in the Grossman-Hart-Moore Theory of the Firm, Economics Bulletin, Vol. 30, No. 3 (August 2010), pp.2112-2118. 

22.  Ministerial Weights and Government Formation: Estimation Using a Bargaining Model (with Y. Watanabe), Journal of Law, Economics, and Organization, Vol. 24, No. 1 (May 2008), pp.95-119. [JSTOR Link] 

• Supplementary Material

• Data and Matlab Codes (read_this_first.txt, mlel.m, likl.m, bsl.m, data.txt)

• Corrigendum and Corrected Data (January 13, 2010)

• Introductory article at Kellogg Insight (October 5, 2007)

23.  Third-Degree Price Discrimination, Consumption Externalities, and Social Welfare, Economica, Vol. 72, No. 285 (February 2005), pp.171-178. [JSTOR Link] 

• Supplementary Material

24.  Reply to Paolo Bertoletti, "A Note on Third-Degree Price Discrimination and Output", Journal of Industrial Economics, Vol. 52, No. 3 (September 2004), p.457. [JSTOR Link] 

25.  Costly Participation in Voting and Equilibrium Abstention: A Uniqueness Result, Economics Bulletin, Vol. 4, No. 2 (January 2004), pp.1-5. 

26.  A Note on "Third-Degree Price Discrimination with Interdependent Demands", Journal of Industrial Economics, Vol. 50, No. 2 (June 2002), p.235. [JSTOR Link]

27.  Severe versus Lenient Internal Promotion: An Analysis of the Optimal Promotion Mechanism in Organizations, Japanese Economic Review, Vol. 53, No. 2 (June 2002), pp.226-241. 

Non-Peer-Reviewed Articles Written in English:

1.  Price Elasticity and Pass-Through in the Nash Bargaining Solution in a Common-Retailer Channel, Kyoto Economic Review (Keizai Ronso) (Kyoto University), Vol. 197, No. 1 (February 2023), pp. 1-10.

2.  Galbraith Meets Weyl and Fabinger : Countervailing Power and Imperfect Competition in the Retail Market, Economic Science (Nagoya University),  Vol. 68, No. 1 (June 2020), pp.39-45.

3.  Gender Differences in Extended Warranty Purchases : The Case of Electronic Products (coauthored with R. Kato), Economic Science (Nagoya University), Vol. 66, No. 1 (June 2018), pp.1-14.

4.  The Welfare Effects of Oligopolistic Third-Degree Price Discrimination when Own and Cross Price Elasticities Are Constants (coauthored with T. Ebina), Economic Science (Nagoya University), Vol. 64, No. 4 (March 2017), pp.23-39.

5.  Entrepreneurship, Financial Intermediation, and Inequality, Economic Science (Nagoya University), Vol. 64, No. 2 (September 2016), pp.1-22.

Other Research Writings: 

1.  Price Discrimination, an entry in the International Encyclopedia of the Social Sciences, 2nd Edition, Edited by William A. Darity, Jr., 2007, Macmillan Reference USA, Vol. 6, pp.392-393. 

Some Research/Teaching Notes: 

1.  Robinson Meets Weyl and Fabinger: Oligopsony and Exploitation in General Equilibrium (current draft: February 2022)

2.  Klein and Monti Meet Weyl and Fabinger: Imperfect Competition in the Banking Sector (current draft: February 2022)

3.  Menu Costs, Price Rigidity, and Imperfect Competition: A Conduct Parameter Approach (current draft: February 2022)

4.  Maskin and Riley Meet Weyl and Fabinger: A Conduct Parameter Approach to Modeling Nonlinear Pricing in Oligopoly (current draft: February 2022)

5.  Ramsey, Lerner, and Wilson Meet Weyl and Fabinger: A Note on Nonlinear Pricing in Oligopoly (current draft: February 2022)

6.  Meade and Weitzman Meet Weyl and Fabinger: Imperfect Competition in the Product Market and Profit Sharing  (current draft: February 2022)

7.  An Alernative Expression of Producer Surplus under Imperfect Competition: A Conduct Parameter Approach (current draft: July 2020)           

8.  Summary of Jaffe and Weyl (2010) and Jaffe and Kominers (2012) (current draft: May 2019)