3 papers
econ.EM2025
Difference-in-Differences in the Presence of Unknown Interference
Fabrizia Mealli, Javier Viviens
The stable unit treatment value (SUTVA) is a crucial assumption in the Difference-in-Differences (DiD) research design. It rules out hidden versions of treatment and any sort of in…
econ.EM2025
Do Test Scores Help Teachers Give Better Track Advice to Students? A Principal Stratification Analysis
Andrea Ichino, Fabrizia Mealli, Javier Viviens
Every year, over one million EU students choose a secondary school track based on teacher recommendations, yet little evidence shows this yields optimal assignments. Using Dutch da…
econ.EM2025
Estimating the Intensive Margin Effect in Panel Data Settings
Javier Viviens
Many policies operate through two different channels: the extensive margin (e.g., the decision to participate) and the intensive margin (e.g., the intensity of the response among p…