# 8 Regression discontinuity

## 8.1 Introduction

Oct 24.

Slides.After class, read Huntington Klein 2021 Chapter 20, sections 20.1 and 20.3.4.

In some settings, a treatment is assigned based solely off the value of a continuous variable. In these situations, we can identify a local ATE without many additional assumptions. Today will introduce how this works using regression discontinuity designs.

## 8.2 Lab: Regression Discontinuity - Bandwidth and Examples

Oct 25 After lab, read Huntington Klein 2021 Chapter 20, section 20.2.1.

SlidesDownload today’s.Rmd document here.

We’ll discuss bandwidth selection and triangular weighting. We’ll also apply regression discontinuity to a concrete example and give you a chance to try it out for yourself.

## 8.3 Discussion

Oct 26.

Slides.After class, read Huntington Klein 2021 Chapter 20, sections 20.2.2. through 20.3.1.

We’ll continue our discussion of regression discontinuity designs by discussing fuzzy RDD and validation checks for RDD.