IE:DPC, Ch12: Example of External Validity with College Subsidies
Channel: David Kaplan
Date: 2022-11-19

Example of external validity: thinking about the population of interest if you're considering expanding college subsidies in Missouri, and how that would compare to the population studied for a difference-in-differences estimate of the ATT.
Textbook (IE:DPC) "Introductory Econometrics: Description, Prediction, and Causality"
https://kaplandm.github.io/teach.html
https://www.themizzoustore.com/p-236916-introductory-econometrics-description-prediction-and-causality.aspx