Advanced Search
MyIDEAS: Login to save this paper or follow this series

Monopolistic Competition and Optimum Product Selection: Why and How Heterogeneity Matters

Contents:

Author Info

  • Antonella Nocco
  • Gianmarco I. P. Ottaviano
  • Matteo Salto

Abstract

After some decades of relative oblivion, the interest in the optimality properties of monopolistic competition has recently re-emerged due to the availability of an appropriate and parsimonious framework to deal with firm heterogeneity. Within this framework we show that non-separable utility, variable demand elasticity and endogenous firm heterogeneity cause the market equilibrium to err in many ways, concerning the number of products, the size and the choice of producers, the overall size of the monopolistically competitive sector. More crucially with respect to the existing literature, we also show that the extent of the errors depends on the degree of firm heterogeneity. In particular, the inefficiency of the market equilibrium seems to be largest when selection among heterogeneous firms is needed most, that is, when there are relatively many firms with low productivity and relatively few firms with high productivity.

Download Info

If you experience problems downloading a file, check if you have the proper application to view it first. In case of further problems read the IDEAS help page. Note that these files are not on the IDEAS site. Please be patient as the files may be large.
File URL: http://cep.lse.ac.uk/pubs/download/dp1206.pdf
Download Restriction: no

Bibliographic Info

Paper provided by Centre for Economic Performance, LSE in its series CEP Discussion Papers with number dp1206.

as in new window
Length:
Date of creation: Apr 2013
Date of revision:
Handle: RePEc:cep:cepdps:dp1206

Contact details of provider:
Web page: http://cep.lse.ac.uk/_new/publications/series.asp?prog=CEP

Related research

Keywords: monopolistic competition; product diversity; heterogeneity; selection; welfare;

Other versions of this item:

Find related papers by JEL classification:

This paper has been announced in the following NEP Reports:

References

References listed on IDEAS
Please report citation or reference errors to , or , if you are the registered author of the cited work, log in to your RePEc Author Service profile, click on "citations" and make appropriate adjustments.:
as in new window
  1. Bagnoli, M. & Bergstrom, T., 1989. "Log-Concave Probability And Its Applications," Papers 89-23, Michigan - Center for Research on Economic & Social Theory.
  2. Mark J. Melitz, 2002. "The Impact of Trade on Intra-Industry Reallocations and Aggregate Industry Productivity," NBER Working Papers 8881, National Bureau of Economic Research, Inc.
  3. OTTAVIANO, Gianmarco & THISSE, Jacques-François, 1999. "Agglomeration and trade revisited," CORE Discussion Papers 1999041, Université catholique de Louvain, Center for Operations Research and Econometrics (CORE).
  4. Marc J. Melitz & Stephen J. Redding, 2013. "Firm Heterogeneity and Aggregate Welfare," CEP Discussion Papers dp1200, Centre for Economic Performance, LSE.
  5. Behrens, Kristian & Murata, Yasusada, 2007. "General equilibrium models of monopolistic competition: A new approach," Journal of Economic Theory, Elsevier, vol. 136(1), pages 776-787, September.
  6. Behrens, Kristian & Murata, Yasusada, 2012. "Trade, competition, and efficiency," Journal of International Economics, Elsevier, vol. 87(1), pages 1-17.
  7. Arnaud Costinot & Andres Rodriguez-Clare & Costas Arkolakis, 2010. "New Trade Models, Same Old Gains?," 2010 Meeting Papers 433, Society for Economic Dynamics.
  8. Carole Maignan & Gianmarco Ottaviano & Dino Pinelli & Francesco Rullani, 2003. "Bio-Ecological Diversity vs. Socio-Economic Diversity: A Comparison of Existing Measures," Working Papers 2003.13, Fondazione Eni Enrico Mattei.
  9. Ottaviano, Gianmarco & Melitz, Marc, 2008. "Market Size, Trade, and Productivity," Scholarly Articles 3229096, Harvard University Department of Economics.
  10. Dixit, Avinash K & Stiglitz, Joseph E, 1977. "Monopolistic Competition and Optimum Product Diversity," American Economic Review, American Economic Association, vol. 67(3), pages 297-308, June.
  11. Marc J. Melitz & Stephen J. Redding, 2013. "New Trade Models, New Welfare Implications," NBER Working Papers 18919, National Bureau of Economic Research, Inc.
  12. Marc J. Melitz & Stephen J. Redding, 2012. "Heterogeneous firms and trade," LSE Research Online Documents on Economics 48928, London School of Economics and Political Science, LSE Library.
  13. Kokovin, Sergey & Thisse, Jacques-François & Zhelobodko, Evgeny, 2010. "Monopolistic Competition: Beyond the CES," CEPR Discussion Papers 7947, C.E.P.R. Discussion Papers.
Full references (including those not matched with items on IDEAS)

Citations

Citations are extracted by the CitEc Project, subscribe to its RSS feed for this item.
as in new window

Cited by:
  1. Antonella Nocco & Gianmarco I. P. Ottaviano & Matteo Salto, 2014. "Monopolistic Competition and Optimum Product Selection," American Economic Review, American Economic Association, vol. 104(5), pages 304-09, May.

Lists

This item is not listed on Wikipedia, on a reading list or among the top items on IDEAS.

Statistics

Access and download statistics

Corrections

When requesting a correction, please mention this item's handle: RePEc:cep:cepdps:dp1206. See general information about how to correct material in RePEc.

For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: ().

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 references are entirely missing, you can add them using this form.

If the full references list an item that is present in RePEc, but the system did not link 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 profile, as there may be some citations waiting for confirmation.

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