Why High-Order Polynomials Should Not Be Used in Regression Discontinuity Designs
It is common in regression discontinuity analysis to control for third, fourth, or higher-degree polynomials of the forcing variable. There appears to be a perception that such methods are theoretically justified, even though they can lead to evidently nonsensical results. We argue that controlling...
| Main Authors: | , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
American Statistical Association
2019
|
| Subjects: | |
| Online Access: | View Fulltext in Publisher |