Calendrier du 16 avril 2024
PSI-PSE (Petit Séminaire Informel de la Paris School of Economics) Seminar
Du 16/04/2024 de 17:00 à 18:00
R1-09
OYON LERGA Unai (PSE)
Bounding Treatment Effect Heterogeneity with an Application to Labor Economics
Uncovering the nature and the magnitude of the heterogeneity in the impact of a public policy is central for practitioners. Using an interactive fixed effects (IFE) model in the context of panel data to accommodate non-parallel evolutions of untreated potential outcomes across groups, I aim to provide two measures of the aforesaid heterogeneity. First and foremost, a bound of the variance of the treatment effects, and, under stronger assumptions, a characterization of the full distribution of treatment effects on the treated (QTT). I then review the available results in the literature using deconvolutions and instrumental variables in quantile regressions to estimate QTTs, and sketch some potential applications in the field of Labor Economics.
Du 16/04/2024 de 12:30 à 13:30
WOO-MORA Guillermo (PSE)
Moral Force: Leaders's actions, within-city social distancing and COVID-19
écrit avec María Montoya-Aguirre, Federico Daverio and Max Ponce de León
I exploited a natural experiment within India's public engineering institutes to study how increased exposure to students from different castes affects job market and academic outcomes, as well as support towards affirmative action (AA) policies and mental well-being. Leveraging a setting where negative stereotypes about ability are very salient due to intense competition and explicit caste-based affirmative action policies, I used roommate exposure as an opportunity to identify possible discrimination from upper-caste groups and changes in self-confidence among disadvantaged groups that are possibly relevant to broader affirmative action policies in India.
Pilot results consistently indicate negative effects on disadvantaged groups' academic skills and job market outcomes when assigned to mixed-caste rooms in their first year. Academic interactions between roommates are lower when they live in mixed-caste rooms, but no change in social interactions is observed. Finally, support for attitudes towards affirmative action policies reduces for both upper and lower caste groups when they live in mixed-caste rooms, even though lower-caste students believe AA policies benefit them. A large-scale survey will further explore these findings, investigating mechanisms like discrimination, self-confidence, networks, and information.
Applied Economics Lunch Seminar
Du 16/04/2024 de 12:30 à 13:30
Salle R2-21
WOO-MORA Guillermo (PSE)
Moral Force: Leaders's actions, within-city social distancing and COVID-19
écrit avec María Montoya-Aguirre, Federico Daverio and Max Ponce de León
We study how a populist leader influenced social distancing behavior and affected COVID-19 outcomes among his supporters during the early stages of the pandemic in Mexico. President Andrés Manuel López Obrador (AMLO) defied government stay-at-home recommendations, prompting dismissal by the COVID-19 Czar, who described him as a moral force rather than a contagion threat. Leveraging granular mobility and political support data, we employ a difference-in-difference research design, revealing that post-Czar statement, pro-AMLO electoral precincts increased out-of-home mobility by up to 2% two weeks later. Concurrently, pro-AMLO municipalities experienced elevated COVID-19 positivity, hospitalization, and case-fatality rates. These results underscore the impact of populist leaders on public health behaviors and the risks when scientists align with populist rhetoric.