研討日期

2010年 04月03日10:20 ~ 11:30

研討地點

台大社會科學院26教室

題目

Input Price Discrimination under Returns to Scale

作者

Kuo-Feng Kao and Hong Hwang

文獻出處

Working Paper

報告人

Kuo-Feng Kao (高國峯)

參加人員

黃鴻、梁文榮、蔡明芳、彭正浩、周冰瑤、鐘暳陵、王光正、陳宏易、王羿傑、高國峯、張民忠、王佳琪、張瑞雲、吳芝文、楊雅博、施冠宇、涂光億、褚泓毅、林晏如、陳金盛

摘要

In the traditional literature, the basic assumption that one unit of input produces one unit of output has already be a common setting in vertically related markets. However, it may not always be true among industries since the production technology is different. Therefore, the one to one correspondent production technology should be revised. In this paper, we examine the welfare effect of price discrimination under returns to scale in a vertically related market with one upstream monopolist and two downstream duopolists. We found that when the production technology is constant returns to scale or increasing returns to scale, prohibiting input price discrimination can raise social welfare. However, when the production technology is enough decreasing returns to scale, the upstream monopolist may charge the highly (less) efficient firm a lower (higher) input price. That improves the production efficiency and therefore, the social welfare. Moreover, we show that even if the final outputs are lower under discriminatory pricing, the social welfare can still be higher.

備註