THE WELFARE EFFECTS OF THIRD-DEGREE PRICE DISCRIMINATION IN A DIFFERENTIATED OLIGOPOLY

被引：18
|
作者：
Adachi, Takanori [1 ]
Matsushima, Noriaki [2 ]
机构：
[1] Nagoya Univ, Sch Econ, Chikusa Ku, Nagoya, Aichi 4648601, Japan
[2] Osaka Univ, Inst Social & Econ Res, Osaka 5670047, Japan
来源：
ECONOMIC INQUIRY | 2014年 / 52卷 / 03期
关键词：
SOCIAL-WELFARE; OUTPUT; COMPETITION; MARKETS;
D O I：
10.1111/ecin.12075
中图分类号：
F [经济];
学科分类号：
02 ;
摘要：
This article examines the welfare effects of third-degree price discrimination under oligopolistic competition with horizontal product differentiation. We derive a necessary and sufficient condition for price discrimination to improve social welfare: the degree of substitution must be sufficiently greater in the strong market (where the discriminatory price is higher than the uniform price) than in the weak market (where it is lower). It is verified, however, that consumer surplus is never improved; social welfare improves solely owing to an increase in the firms' profits in the case of linear demands. (JEL D43, L11, L13)
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页码：1231 / 1244
页数：14
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