Difference-in-differences I

Readings

• Chapter 7 in Impact Evaluation in Practice¹
• Chapter 18 in The Effect²

Slides

The slides for today’s lesson are available online as an HTML file. Use the buttons below to open the slides either as an interactive website or as a static PDF (for printing or storing for later). You can also click in the slides below and navigate through them with your left and right arrow keys.

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• Introduction
• Quasi-experiments
• Interactions & regression
• Two wrongs make a right
• Diff-in-diff assumptions

Videos

Videos for each section of the lecture are available at this YouTube playlist.

• Introduction
• Quasi-experiments
• Interactions & regression
• Two wrongs make a right
• Diff-in-diff assumptions

You can also watch the playlist (and skip around to different sections) here:

In-class stuff

Here are all the materials we’ll use in class:

• Session 8-9 FAQ slides (PDF)
• Unobserved confounding and sensitivity analysis
• Session 8-9 R code (on RStudio.cloud)