Dr. Sangyoon PARK

Assistant Professor

Faculty of Business and Economics

The University of Hong Kong


KK 832


(852) 3917 7769


(852) 2548 1152






Sangyoon PARK received his Ph.D. in Economics from Northwestern University, and joined The University of Hong Kong in 2016. He also holds a B.A. in Economics and Mathematics from the University of Wisconsin-Madison in 2010 and an M.A. in Economics from Northwestern University in 2011.


His research interests lie at the intersection of development, labour, and personnel economics. His current projects focus on topics related to agricultural technology adoption and peer effects.


Please download CV here.




-       Publications

Socializing at Work: Evidence from a Field Experiment with Manufacturing Workers [PDF], American Economic Journal: Applied Economics, 11(3), July 2019, pp. 424-55

Coeducation, Academic Performance and Subject Choice: Evidence from Quasi-Random Classroom Assignments [PDF], Education Economics, 26(6), November 2018, pp. 574-92

-       Working Paper

Heterogeneous Peers at Work: Evidence from Randomized Peer Assignments [PDF]

-       Work in Progress

Technology Upgrading in Agricultural Supply Chains: A Field Experiment in Vietnam [AEA RCT Registry]


Abstract: This project investigates the impacts of offering training and certification on food and pesticide safety agricultural technology to farmers and intermediaries on the adoption of pesticide safety practices and product quality. For the training intervention, farmer groups and intermediaries were randomized into one of the following treatment groups: (i) only farmers receive training, (ii) only intermediaries receive training, (iii) both farmers and intermediaries receive training, and (iv) no training (control group). For the certification intervention, randomly selected farmers were provided with an opportunity to receive a pesticide safety certificate upon qualifying pesticide safety tests. The context of this study is the dragon fruit industry, which is the largest agricultural export sector of Vietnam. To deliver the interventions and conduct evaluations on farming practices, I collaborated with a local agricultural center specializing in dragon fruit production.



Demand for Ultrasonography: Roles of price framing and sex information, with Hyuncheol Kim and Hyuk Son [AEA RCT Registry]


Abstract: Obstetric ultrasonography is a major part of antenatal care in developed countries. However, the procedure is not yet common in many sub-Saharan African countries. In this project, we examine how price framing and provision of fetal sex information affect the demand for obstetric ultrasonography among pregnant women in rural Malawi. Specifically, we first randomly assign date-facility groups to one of four groups: (i) price salient, reveal fetal sex info, (ii) price salient, do not reveal sex info, (iii) subsidy salient, reveal fetal sex info, (iv) subsidy salient, do not reveal sex info. Then for pregnant women visiting one of these health facilities we measure their willingness to pay to receive ultrasonography using a multiple price list Becker-DeGroot-Marschak(BDM) method.



When Certification Turns Sour: A Randomized Intervention on Pesticide Testing with Dragon Fruits


Abstract: Information frictions along the supply chain can severely undermine the provision of high quality products and result in a market for lemons. One potential solution to this problem is to attain product certification from external experts. This proposed project investigates why certification may fail to solve the lemons problem driven by asymmetric information on product quality between the producer and the buyer. Through a randomized intervention with dragon fruit farms in Vietnam, I study whether and how producers (i.e. farmers) and buyers (i.e. intermediaries) respond to the testing agency selected for pesticide residue analysis, a critical factor for receiving certification for Good Agricultural Practices (VietGAP). Specifically, producers are randomly assigned to a testing agency chosen from a list determined by the researcher. I test producer response to the testing agency by comparing pesticide residue levels in dragon fruit across producer groups assigned to different testing agencies. Next, I conduct a survey with buyers to compare their willingness to purchase dragon fruits certified and tested by different agencies.



Opening the black box of North Koreas economy, with Meeyoung Cha, Jihee Kim, and Hyunjoo Yang


The Impacts of Tracking on Academic Achievement and Self-Efficacy: Evidence from a Regression Discontinuity Design, with Jungmin Lee





-       ECON2210 Intermediate Microeconomics


-       ECON6009 Labour Economics








Last Update: 2020-01-13