Open AccessUnderstanding Instrumental Variables in Models with Essential Heterogeneity
Author(s) -
James J. Heckman,
Edward Vytlacil,
Sergio Urzúa
Publication year - 2006
Language(s) - English
Resource type - Reports
DOI - 10.3386/w12574
Subject(s) - instrumental variable , econometrics , statistics , computer science , mathematics