The Causal Interpretation of Two-Stage Least Squares with Multiple Instrumental Variables
NBER Working Paper No. 25691
---- Acknowledgments ----
We thank Stéphane Bonhomme, Vishal Kamat, Azeem Shaikh, and Ed Vytlacil for helpful comments, and Christine Blandhol, John Bonney, and Conroy Lau for outstanding research assistance. The views expressed herein are those of the authors and do not necessarily reflect the views of the National Bureau of Economic Research.
---- Disclosure of Financial Relationships for Alexander Torgovitsky ----
Research supported in part by National Science
Foundation grant SES-1530538.