Oligopoly Power in the Food and Tobacco Industries
Oligopoly Power in the Food and Tobacco Industries
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DOI：
10.2307/1244442
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发表时间：
1997-08
期刊：
影响因子：
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通讯作者：
S. Bhuyan;R. Lopez
中科院分区：
文献类型：
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作者：
S. Bhuyan;R. Lopez
本文利用新经验产业组织（NEIO）框架和四位数SIC数据，对40个食品和烟草行业的寡头垄断程度和规模经济进行了估计和检验。勒纳指数和规模弹性在整个食品和烟草行业进行了比较。T检验证实，所有这些行业，但三个施加统计上显着程度的寡头垄断的权力，超过82%的这些行业表现出非恒定的规模回报。实证结果还提供了每个行业的需求价格弹性的估计。
In this article we estimate and test for the degree of oligopoly power and economies of scale in forty food and tobacco industries using the New Empirical Industrial Organization (NEIO) framework and four-digit SIC data. Lerner indices and elasticities of scale are compared throughout the entire food and tobacco industries. T-tests verify that all but three of these industries exert statistically significant degrees of oligopoly power and that over 82% of these industries exhibit nonconstant returns to scale. The empirical results also provide estimates of the price elasticities of demand for each industry.