Pedro’s checklist 4c: Ashenfelter Dip, Parallel Trends but Non-zero Pre-trends
causalinf.substack.com
Part 1: Introduction and Theoretical Background In this substack, I’m going to simulate a treatment assignment mechanism that I’ll be calling Ashenfelter’s Dip. I define it below. But the punchline of the substack is this: This assignment mechanism will still satisfy parallel trends
Pedro’s checklist 4c: Ashenfelter Dip, Parallel Trends but Non-zero Pre-trends
Pedro’s checklist 4c: Ashenfelter Dip…
Pedro’s checklist 4c: Ashenfelter Dip, Parallel Trends but Non-zero Pre-trends
Part 1: Introduction and Theoretical Background In this substack, I’m going to simulate a treatment assignment mechanism that I’ll be calling Ashenfelter’s Dip. I define it below. But the punchline of the substack is this: This assignment mechanism will still satisfy parallel trends