Class 24: Introduction to Difference-in-Differences

Published

April 9, 2026

The goal of Part 2 of this module is to introduce the difference-in-differences identification strategy and begin to implement this strategy with simulated data.

Objectives

  • Describe the basics of panel data and fixed effects
  • Describe the DD research design
  • Understand and implement DD using simple averages and regression

Activities

  • Implement DD using simple averages and in a regression context
  • Work with simulated data to understand the mechanics of DD estimation