A note on testing instrument validity for the identification of LATE |
| |
| Authors: | Lukas Laffers Giovanni Mellace |
| |
| Institution: | 1.Department of Mathematics, Faculty of Natural Sciences,Matej Bel University,Banska Bystrica,Slovakia;2.Department of Business and Economics,University of Southern Denmark,Odense,Denmark |
| |
| Abstract: | In this paper, we show that the testable implications derived in Huber and Mellace (Rev Econ Stat 97:398, 2015) are the best possible to detect invalid instruments in the presence of heterogeneous treatment effects and endogeneity. We also provide formal proof of the fact that those testable implications are only necessary, but not sufficient, conditions for instrument validity. |
| |
| Keywords: | |
| 本文献已被 SpringerLink 等数据库收录！ |
|
