Yutaro Sakai

I am a research fellow at the department of Global Agricultural Science, the University of Tokyo. I received a PhD in Economics at the University of Calgary (Graduation November 2017), and an MS and a BS from the University of Tokyo. Prior to starting the PhD program, I was receiving a Research Fellowship for Young Scientists from Japan Society for the Promotion of Science (JSPS). From Janurary 2018, I will start working as a post-doctoral associate at the Arizona State University School of Sustainability.

Research fields

Environmental and Resource economics, Health economics, Econometrics

Major awards

Best Student Paper Award. North American Association of Fisheries Economists 2015
Best Graduate Student Teaching Award. Department of Economics, University of Calgary 2014

Ph.D. Thesis

“Three Essays in Environmental and Resource Economics”

Chapter 1.

Subsidy, Fisheries Management and Stock Depletion(Forthcoming in Land Economics, Vol 93(1))

This paper investigates the impact of fishery subsidies on resource stocks in 23 OECD countries during 1996-2011. Results show that the effect of subsidies depends on the type of subsidy and the management regime. Within this sample, cost reducing subsidies have no effect on stocks if management is individual quota-based but have negative effects if management uses traditional input/output restrictions. Subsidies for improving fishery management and infrastructure produce beneficial effects on stocks under traditional management, but no effect with individual quota-based management. These results suggest global efforts to reform fishery subsidies should be carried out in a highly selective manner.

Chapter 2.

The Vaccination Kuznets Curve: Rise and Fall of Vaccination Rates with Income

This paper presents a new stylized fact about the relationship between income and childhood vaccination. It shows vaccination rates first rise but then fall as income increases. This pattern is observed in WHO country-level panel data, and in US county-level panel and individual-level repeated cross-section data. This pattern suggests that both low and high-income parents are less likely to follow the standard vaccination schedule, although for different reasons. To shed light on these parents’ vaccination decisions, I develop a simple model and show how substitutes for vaccination such as avoidance measures and medical care could be responsible for this finding.

Chapter 3.

Climate Change, Vaccination Leakage, and Border Control (In Progress)