主题 / Topic：A theory of complementarity between online and offline markets
时间 / Time：10月13号（周五）,下午2:00-3:30｜Oct. 13th (Friday), 2:00-3:30 PM
地点 / Venue：文澜109教室｜Room 109，WENLAN
主讲/Speaker
李三希博士毕业于法国图卢兹经济学院，现为中国人民大学经济学院副教授。主要研究方向为信息经济学，产业组织理论，配对和风险分担等。已在Journal of Economic Behavior & Organization，Journal of Economic Theory，Journal of Public Economics，世界经济，管理评论等知名期刊发表多篇学术论文。主持了国家自科基金青年项目，教育部人文社科基金青年项目等多个项目，同时也是Journal of Public Economics，International Journal of Industrial Organization，Journal of Economics，世界经济， 世界经济文汇等期刊的审稿人。
研究领域/Research Interests
信息经济学，产业组织理论，配对和风险分担
摘要/Abstract
We illustrate two layers of complementarily between online and offline markets. First, the online market helps sell to consumers that are too costly to reach by offline shops. Secondly, when online consumers are uncertain about the product quality, offline shops generate an informed-consumer base which allows the online price to credibly reveal quality. This can occur even if the online consumers have no contact with the offline consumers, i.e. no social learning. We then show that, if the quality types are sufficiently differentiated, social learning helps reduce the number of offline shops required for the online price to be informative. But if the quality types are close, for the online shop to reveal quality, the firm needs not only a large enough social learning factor, but also a small enough offline consumer base that generates the social learning.
