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Please use this identifier to cite or link to this item: http://hdl.handle.net/2262/2598

Title: Is equating market share to market power a sound economic principle?
Other Titles: Barrington lecture 2002/2003
Author: Whelan, Ciara
Keywords: Market power
Homogenous and differentiated products
Market shares
Issue Date: 2003
Publisher: Statistical and Social Inquiry Society of Ireland
Citation: Whelan, Ciara. 'Barrington lecture 2002/2003: is equating market share to market power a sound economic principle?'. - Dublin: Journal of the Statistical and Social Inquiry Society of Ireland,Vol. XXXII, 2002/2003, pp109-128
Series/Report no.: Journal of the Statistical and Social Inquiry Society of Ireland
Vol. XXXII 2002/2003
Abstract: There is a long history of mapping market structure into market power in economic analysis. This paper addresses the validity of this principle for both homogenous and differentiated products industries. While mapping market share dominance into market power may be acceptable for homogenous goods as a rule of thumb, it is by no means a robust result. In the case of differentiated products industries, there is no theoretical foundation for such a mapping. This paper highlights the need to move towards a structural approach to assessing market power in industries.
Description: Read before the Society, 8 May 2003. This lecture is delivered under the auspices of the Barrington Trust (founded by the bequest of John Barrington, Esq.) with the collaboration of the Journal of the Statistical and Social Inquiry Society of Ireland.
URI: http://hdl.handle.net/2262/2598
ISSN: 00814776
JEL L40
Appears in Collections:Barrington Lectures
Archive JSSISI: 1847- Complete Collection
JSSISI: 2002 to 2003, Vol. XXXII, 156th Session

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