This study examines the impacts of political competition on eco-efficiency. We first develop a theoretical model in which local government officials compete against each other to maximize their own political score. We find that after an initial stage of decline, eco-efficiency eventually increases once environmental performance becomes a meaningful component of local government officials’ annual assessment. These theoretical predictions are corroborated...
This paper studies the impact of foreign direct investment (FDI) on domestic firms’ innovation in China. Using firm level patent application records that cover all manufacturing firms with annual sales above 5M Yuan from 1998 to 2007, our results show that both the quantity and quality of domestic firms’ innovation benefit from FDI. In addition to the traditional spillover effect from FDI in the same industry, the paper emphasizes the importance of knowledge spillover...
This article summarizes a study of the economic and public health effects of the Health Code app in China. By exploiting the staggered implementation of this technology across 322 Chinese cities, this study finds that the Health Code app significantly reduced virus transmission and facilitated economic recovery during the COVID-19 pandemic. A macroeconomic susceptible-infectious-recovered (SIR) model calibrated to the micro-level estimates shows...
There was a bubble in the prices of put warrants traded on the Shanghai and Shenzhen stock exchanges during the summer of 2007. We use investor trading records from a large securities firm to show that put warrant investors engaged in a particular form of feedback trading. This feedback trading exacerbated an initial run-up in put warrant prices caused by a change in the stock transaction tax, and created the bubble.
This study proposes a novel channel through which trade liberalization may induce innovation through the reduction of trade policy uncertainties (TPU) in destination markets. To verify this link, we utilize the significant reduction of TPU engendered by China's accession to the World Trade Organization (WTO) in 2001 as a quasi-natural experiment. We find that reduction in TPU significantly encourages firms' patent applications and that firms' innovation responses to TPU reduction vary by productivity, ownership, exporting status, and the irreversibility of investment.