Regression Discontinuity With Integer Running Variables
2015/12/15
研討會日期 : 2015-12-15
時間 : 14:30
主講人 : Professor Myoung-Jae Lee
主持人 : Professor Kamhon Kan
地點 : Conference Room C103
演講者簡介 : Professor Lee received his Ph.D. in Economics from University of Wisconsin-Madison in 1989. He is currently a Professor of Economics at Korea University. His primary research fields are Econometrics and Statistics; Secondary are Labor and Health Economics.
演講摘要 : In regression discontinuity (RD), the treatment of interest depends on whether an underlying continuous running variable crosses a cutoff or not, and RD analysis is done only with some local observations around the cutoff. In reality, however, most running variables are discrete. If the degrees of discreteness is low relative to the size of the chosen local neighborhood, then the discretenee can be ignored. Otherwise, the discreteness hinders the RD localization. This paper deals with RD with a running variable that takes on not so many integers in the chosen local neighborhood of the cutoff. We review the literature and propose new estimators. We then apply the existing and new estimators to a Taiwanese census to find the effect of education on fertility, where an education reform of increasing compulsory education was implemented to affect children of age 12 or younger on September 2, 1968, to renders a RD with the running variable (age) observed only in years. We find that education has no impact on fertility, differently from negative effects found by many previous studies.
