Research

Working Paper

The Asymmetric Effects of Trade Policy: Airbus and Boeing

working paper, draft available upon request

Abstract: This paper analyzes the welfare effects of trade policy in the global commercial aircraft duopoly, focusing on the long-running dispute between the European Union and the United States over Airbus and Boeing. I develop a structural model of demand and supply with endogenous product entry, and use it to simulate two representative policies: the removal of government subsidies and the imposition of bilateral tariffs. The simulations show how nominally symmetric policies can generate markedly asymmetric firm-level outcomes, re-flecting differences in the form of government support and in the two firms’ competitive positions with endogenous product entry serving as the primary channel.

Algorithmic Personalization and Digital Addiction: A Field Experiment on Douyin (TikTok)

with Qianyun (Carole) Gao, Yu Gao, and Juanjuan Meng, draft available at SSRN:4885043

Abstract: We conducted a field experiment to investigate the impact of deactivating personalized recommendation algorithms or abstaining from Douyin (the Chinese version of TikTok) on users’ screen time and well-being. We found that while both treatments reduced Douyin use during the intervention, only the deactivation of personalized recommendations induced a lasting effect post-intervention. Further analysis indicates that deactivating personalized content bolstered cognitive competence, while abstaining from Douyin led to a significant decline in subjective well-being. In alignment with an adjusted habit formation model, these results highlight the effectiveness of disabling personalized algorithms as a strategy to combat digital addiction.