IDEAS home Printed from https://ideas.repec.org/p/arx/papers/2301.06720.html
   My bibliography  Save this paper

Testing Firm Conduct

Author

Listed:
  • Marco Duarte
  • Lorenzo Magnolfi
  • Mikkel S{o}lvsten
  • Christopher Sullivan

Abstract

Evaluating policy in imperfectly competitive markets requires understanding firm behavior. While researchers test conduct via model selection and assessment, we present advantages of Rivers and Vuong (2002) (RV) model selection under misspecification. However, degeneracy of RV invalidates inference. With a novel definition of weak instruments for testing, we connect degeneracy to instrument strength, derive weak instrument properties of RV, and provide a diagnostic for weak instruments by extending the framework of Stock and Yogo (2005) to model selection. We test vertical conduct (Villas-Boas, 2007) using common instrument sets. Some are weak, providing no power. Strong instruments support manufacturers setting retail prices.

Suggested Citation

  • Marco Duarte & Lorenzo Magnolfi & Mikkel S{o}lvsten & Christopher Sullivan, 2023. "Testing Firm Conduct," Papers 2301.06720, arXiv.org, revised Jan 2024.
    • Handle: RePEc:arx:papers:2301.06720
    as

    Download full text from publisher

    File URL: http://arxiv.org/pdf/2301.06720
    File Function: Latest version
    Download Restriction: no
    ---><---

    References listed on IDEAS

    as
    1. Pakes, Ariel, 2017. "Empirical tools and competition analysis: Past progress and current problems," Scholarly Articles 34710163, Harvard University Department of Economics.
    2. Pakes, Ariel, 2017. "Empirical tools and competition analysis: Past progress and current problems," International Journal of Industrial Organization, Elsevier, vol. 53(C), pages 241-266.
    3. Bresnahan, Timothy F., 1982. "The oligopoly solution concept is identified," Economics Letters, Elsevier, vol. 10(1-2), pages 87-92.
    4. Hall, Alastair R. & Pelletier, Denis, 2011. "Nonnested Testing In Models Estimated Via Generalized Method Of Moments," Econometric Theory, Cambridge University Press, vol. 27(2), pages 443-456, April.
    5. Smith, Richard J, 1992. "Non-nested.Tests for Competing Models Estimated by Generalized Method of Moments," Econometrica, Econometric Society, vol. 60(4), pages 973-980, July.
    6. Hansen, Bruce E. & Lee, Seojeong, 2019. "Asymptotic theory for clustered samples," Journal of Econometrics, Elsevier, vol. 210(2), pages 268-290.
    7. Lau, Lawrence J., 1982. "On identifying the degree of competitiveness from industry price and output data," Economics Letters, Elsevier, vol. 10(1-2), pages 93-99.
    8. Douglas Rivers & Quang Vuong, 2002. "Model selection tests for nonlinear dynamic models," Econometrics Journal, Royal Economic Society, vol. 5(1), pages 1-39, June.
    Full references (including those not matched with items on IDEAS)

    Most related items

    These are the items that most often cite the same works as this one and are cited by the same works as this one.
    1. Matthew Backus & Christopher Conlon & Michael Sinkinson, 2021. "Common Ownership and Competition in the Ready-to-Eat Cereal Industry," NBER Working Papers 28350, National Bureau of Economic Research, Inc.
    2. Yangsoo Jin, 2014. "Testing Oil Refiners' Conduct in Korea: A Differentiated Product Approach," Asian Economic Journal, East Asian Economic Association, vol. 28(2), pages 161-180, June.
    3. Yue Cai, 2021. "Measuring Market Power in the IPO Underwriter," Working Papers 2108, Waseda University, Faculty of Political Science and Economics.
    4. Junpei Komiyama & Hajime Shimao, 2018. "Cross Validation Based Model Selection via Generalized Method of Moments," Papers 1807.06993, arXiv.org.
    5. Marmer, Vadim & Otsu, Taisuke, 2012. "Optimal comparison of misspecified moment restriction models under a chosen measure of fit," Journal of Econometrics, Elsevier, vol. 170(2), pages 538-550.
    6. Scalco, Paulo R. & Braga, Marcelo J., 2015. "Identification of Market Power in Bilateral Oligopoly: The Brazilian Wholesale Market of UHT Milk," 2015 Conference, August 9-14, 2015, Milan, Italy 212278, International Association of Agricultural Economists.
    7. Brissimis, Sophocles N. & Delis, Manthos D., 2011. "Bank-level estimates of market power," European Journal of Operational Research, Elsevier, vol. 212(3), pages 508-517, August.
    8. Awdeh, Ali & Salloum, Ahmad & El Hokayem, Elie, 2013. "Measuring the Degree of Competition in the Arab Banking Systems," MPRA Paper 119122, University Library of Munich, Germany.
    9. Abdul Latif Alhassan & Nicholas Biekpe, 2017. "Liberalization Outcomes and Competitive Behaviour in an Emerging Insurance Market," African Development Review, African Development Bank, vol. 29(2), pages 122-138, June.
    10. Michiel van Leuvensteijn & Christoffer Kok Sørensen & Jacob A. Bikker & Adrian A.R.J.M. van Rixtel, 2013. "Impact of bank competition on the interest rate pass-through in the euro area," Applied Economics, Taylor & Francis Journals, vol. 45(11), pages 1359-1380, April.
    11. Héctor G. González Padilla, 2009. "La privatización de bancos públicos provinciales en Argentina en 1993-2001," CEMA Working Papers: Serie Documentos de Trabajo. 401, Universidad del CEMA.
    12. David Bouras & Troy Frank & Eric Burgess, 2017. "Functional Forms and Oligopolistic Models: An Empirical Analysis," International Journal of Economics and Financial Issues, Econjournals, vol. 7(4), pages 645-649.
    13. Perekhozhuk, Oleksandr & Grings, Michael, 2007. "Econometric Analysis Of Market Power On The Ukrainian Market For Raw Milk," 47th Annual Conference, Weihenstephan, Germany, September 26-28, 2007 7575, German Association of Agricultural Economists (GEWISOLA).
    14. Xiangyi Zhou & Zheng Pei & Botao Qin, 2021. "Assessing Market Competition in the Chinese Banking Industry Based on a Conjectural Variation Model," China & World Economy, Institute of World Economics and Politics, Chinese Academy of Social Sciences, vol. 29(2), pages 73-98, March.
    15. Bo Liu & James D. Shilling & Tien Foo Sing, 2020. "Large Banks and Efficient Banks: how Do they Influence Credit Supply and Default Risk?," Journal of Financial Services Research, Springer;Western Finance Association, vol. 57(1), pages 1-28, February.
    16. Céline Bonnet & Pierre Dubois, 2010. "Inference on vertical contracts between manufacturers and retailers allowing for nonlinear pricing and resale price maintenance," RAND Journal of Economics, RAND Corporation, vol. 41(1), pages 139-164, March.
    17. Cherchye, Laurens & Demuynck, Thomas & De Rock, Bram, 2013. "The empirical content of Cournot competition," Journal of Economic Theory, Elsevier, vol. 148(4), pages 1552-1581.
    18. Manthos D. Delis & K. Christos Staikouras & Panagiotis T. Varlagas, 2008. "On the Measurement of Market Power in the Banking Industry," Journal of Business Finance & Accounting, Wiley Blackwell, vol. 35(7‐8), pages 1023-1047, September.
    19. Shaffer, Sherrill, 2001. "Banking conduct before the European single banking license: a cross-country comparison," The North American Journal of Economics and Finance, Elsevier, vol. 12(1), pages 79-104, March.
    20. Richards, Timothy J. & Acharya, Ram N. & Kagan, Albert, 2008. "Spatial competition and market power in banking," Journal of Economics and Business, Elsevier, vol. 60(5), pages 436-454.

    More about this item

    NEP fields

    This paper has been announced in the following NEP Reports:

    Statistics

    Access and download statistics

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:arx:papers:2301.06720. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    If CitEc recognized a bibliographic reference but did not link an item in RePEc to it, you can help with this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: arXiv administrators (email available below). General contact details of provider: http://arxiv.org/ .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.