报告题目：Rationality of Irrationality: Evidence from E-commerce in China（非理性的合理性：来自中国电子商务的证据）

报告人：周宇（上海纽约大学）

报告时间：2024年4月10日（星期三）上午10:30-11:45

报告地点：可以买球赛的正规app大楼210

邀请部门：经济学系

报告人简介：

周宇（Amanda）是上海纽约大学经济学副教授。她拥有密歇根大学安娜堡分校经济学博士学位以及北京大学学士和硕士学位。周宇教授的研究兴趣包括产业组织、计量经济学和应用计量经济学。她目前的研究重点是网络平台上的消费者行为、家庭金融和家庭经济学。 在加入上海纽约大学之前，周曾任复旦大学经济学院经济学助理教授。

报告摘要：

The global deterioration of COVID-19 on the traditional commercial has been immense. But little is known about its effects on e-commerce. We quantify the causal effect of the lockdown for COVID-19 and the fear of information across continents on the online economy. Using the daily online data on imported baby formula across 16 brands from 14 countries, we exploit difference in difference method to separate the effects of the domestic lockdown and the international lockdown on the online e-commerce. We find that the international lockdown is as equally important as domestic lockdown to affect the online purchases. Most interestingly, we find that though the baby formula when they purchased has been stored at the Bonded Warehouse in China, the fear from the belief causes customers to switch their purchase from lockdown continents to the non-lockdown continents. The results are robust in the consumer level and product level. Our estimates provide important empirical evidence to understand the effects the lockdown.