Unobservable Selection and Coefficient Stability: Theory and Validation
NBER Working Paper No. 19054
---- Acknowledgements ----
Ling Zhong, Unika Shrestha, Damian Kozbur, Guillaume Pouliot, David Birke and Angela Li 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 Brown, University of Chicago Booth School of Business, Wharton and Yale for helpful comments. I am grateful to a number of authors for providing R-squared values from their work and to Amir Sufi for re-running analyses on request. 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.