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本期主题Raising the Bar: Certification Thresholds and Market Outcomes


Certification is a ubiquitous tool that alleviates information asymmetries in markets, yet little is known about the impact of certification selectivity on market outcomes. Exploiting a policy change on eBay, we study how a more selective certification threshold affects entry, exit, and incumbent behavior. We develop a stylized model which shows that changes in selectivity impact the distribution of quality and prices in predictable ways. Using rich data from hundreds of online categories on eBay.com, we find support for the model’s hypotheses.  Our results help inform the design of certification selectivity in electronic and other markets.

报告人:回翔助理教授, 美国圣路易斯华盛顿大学

时间:527日(周三) 1000



Xiang Hui is an Assistant Professor in Marketing at Washington University in St. Louis. He obtained his Ph.D. and M.A. in Economics from the Ohio State University, a B.A. in Economics and a B.S. in Mathematics from Indiana University Bloomington. His research interests are in the areas of Quantitative Marketing, Economics of Digitization and Industrial Organization.