My Expertise
I develop statistical methods for economic models. Unlike experimental data, economists do not have the privilege to conduct a lab-style experiment where confounding factors can be controlled. Some important questions are: Do countries become more democratic as they become richer, i.e., do income (GDP per capita) and democracy have a positive causal relationship? Or does government spending increase GDP? Yet these questions are difficult because the variables affect each other and one cannot experiment with the real economy. Therefore, economists develop an economic model and use a special statistical tool to reveal the true causal relationship between the variables.
Conventional statistical approaches build on the assumption that the underlying economic model is correctly specified. However, this assumption is often too strong. My research focuses on developing robust statistical methods against such violations of the correct model assumption. This robust method would provide a broader interpretation of economic models based on real data.
Fields of Research (FoR)
Econometric and Statistical MethodsSEO tags
Biography
I joined UNSW in 2012 after I finished my PhD in Economics at the University of Wisconsin-Madison.
My Grants
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Australian Research Council (ARC) Discovery Project DP210101440 (AUD 336,939), 2021-2023
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UNSW Business School Dean's Research Fellowship (AUD 60,000), 2020-2022
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Health@Business UNSW Grant (AUD 3,500), 2020
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Australian Research Council (ARC) Discovery Early Career Researcher Award (DECRA) DE170100787 (AUD...view more
I joined UNSW in 2012 after I finished my PhD in Economics at the University of Wisconsin-Madison.
My Grants
-
Australian Research Council (ARC) Discovery Project DP210101440 (AUD 336,939), 2021-2023
-
UNSW Business School Dean's Research Fellowship (AUD 60,000), 2020-2022
-
Health@Business UNSW Grant (AUD 3,500), 2020
-
Australian Research Council (ARC) Discovery Early Career Researcher Award (DECRA) DE170100787 (AUD 331,000), 2017-2019
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UNSW Business School Non-Professorial Research Achievement Award (AUD 2,500), 2017
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UNSW Business School Research Grant (AUD 42,960), 2015-2017
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UNSW Business School Special Research Grant (AUD 17,699), 2013-2014
My Qualifications
- Ph.D. in Economics, University of Wisconsin-Madison, 2008-2012
- M.A. in Economics, Seoul National University, 2006-2008
- B.A. in Economics, B.A. in Political Science (dual major), summa cum laude, Seoul National University, 2000-2006 (military service 2002-2004)
My Awards
- UNSW Business School Dean's Research Fellow, 2020-2022
- UNSW Business School Non-Professorial Research Achievement Award (AUD 2,500), 2017
- The Zellner Thesis Award (Honorable Mention) in Business and Economic Statistics, American Statistical Association, 2014
My Research Activities
I am an econometrician and economist working in the area of statistical inference (decision making). My main research interests are the generalized method of moments (GMM), instrumental variables (IV), two-stage least squares (2SLS), and generalized empirical likelihood (GEL) estimators and their large sample properties under the general model misspecification. Specifically, I am interested in developing robust inference methods under misspecified moment conditions, invalid/many/weak instruments, heterogeneous treatment effects, and clustered sampling.
My Research Supervision
Areas of supervision
Econometric theory and applications
Currently supervising
Wei Tian: PhD student
Fangzhou Yu: PhD student
My Teaching
I have taught econometrics courses for undergraduate and postgraudate students.