[12月23日]国际经济学Workshop

发布日期：2014-12-23 02:20 来源：北京大学国家发展研究院

Seminar on International Economics (12.23)

时间：2014年12月23日（周二）10:30-12:00

地点：北京大学国家发展研究院/中国经济研究中心512会议室

主持：余淼杰

主讲：Tuan A. Luong，上海财经大学

主题：Trade Liberalization and Markup

摘要：The “import as market discipline” is a long standing but important hypothesis in the international economic literature. It states that more imports can bring more competition, hence bring down the market power of the firm. In this paper, we analyse the impact of trade liberalization on the firm’s markup, a measure of market power. Beside trade liberalization in the final market that has been the main line of investigation in the literature, we also consider the intermediate markets which are no less important. Our model, using a general framework, shows that while output tariff cuts lower the firm’s markup, reducing input tariffs leads to a rise of this measure. In particular, our model shows that more efficient firms charge higher markup. And firms become more efficient when they can import better inputs thanks to input tariff cuts. Therefore ignoring the input tariffs could lead to a biased estimated impact. We then use our Chinese data to test our predictions. We estimate the firm markup by a methodology proposed by De Loecker et al. (2014). This method allows us to have multiple product firms, where each product line has its own markup, a salient feature in our data. Our regressions, robust to a variety of specifications, confirm our predictions. Moreover, we also find heterogeneous impacts across different types of products and firms.

演讲者简介：Tuan A. Luong，上海财经大学经济系助理教授，博士毕业于美国普林斯顿大学。研究领域为国际贸易、国际金融和产业组织理论。目前已在Review of Development Economics，Review of International Economics，Vietnam Science & Technology Development等国际知名期刊上发表多篇文章。

Luong_CV.pdf Trade liberaliza.pdf