The welfare effects of third-degree price discrimination in a differentiated oligopoly.
The welfare effects of third-degree price discrimination in a differentiated oligopoly.
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差异化寡头垄断中三级价格歧视的福利效应。
DOI：
10.1111/ecin.12075
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发表时间：
2014
期刊：
影响因子：
1.8
通讯作者：
Noriaki Matsushima
中科院分区：
文献类型：
--
作者：
Takanori Adachi;Noriaki Matsushima
本文研究了在寡头垄断竞争下，产品水平差异化的三度价格歧视的福利效应。我们得到了价格歧视改善社会福利的充分必要条件：替代程度必须在“强”市场（歧视性价格高于统一价格）比“弱”市场（歧视性价格低于统一价格）大得多。然而，消费者剩余从未得到改善;在线性需求的情况下，社会福利的改善仅仅是由于企业利润的增加。（JELD 43、L11、L13）
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. (JELD43, L11, L13)