Unobservable Selection and Coefficient Stability: Theory and Validation
NBER Working Paper No. 19054
---- Acknowledgements -----
Ling Zhong, Unika Shrestha, Damian Kozbur and Guillaume Pouliot provided excellent research assistance. I thank David Cesarini, Raj Chetty, Todd Elder, Amy Finkelstein, Larry Katz, Matt Gentzkow, Matt Notowidigdo, Chad Syverson, Manisha Shah, Azeem Shaikh, Jesse Shapiro, Bryce Steinberg, Matt Taddy, Heidi Williams and participants in seminar at University of Chicago Booth School of Business, Wharton and Yale for helpful comments. I gratefully acknowledge financial support from the Neubauer Family. The views expressed herein are those of the author and do not necessarily reflect the views of the National Bureau of Economic Research.