Calendrier du 18 octobre 2021
Roy Seminar (ADRES)
Du 18/10/2021 de 17:00 à 18:15
Salle R1-09 - Campus Jourdan - 75014 PARIS
ZAPECHELNYUK Andriy (University of St Andrews)
A Model of Debates: Moderation vs Free Speech
This paper provides a framework to study communication conflicts, such as political debates, using a novel model of competition in Bayesian persuasion. Debating parties can frame their arguments for maximal impact. They also can spam the discussion to distract the audience from the opponent’s arguments.
We find that spamming is more detrimental than framing. Truth discovery requires moderation by restricting on the number of arguments that parties can make. When the parties are allowed to speak freely, spamming can kill truth discovery and make communication completely uninformative. By contrast, framing is disciplined by competition. If the conflict between the parties is strong and the number of arguments is restricted, the parties reveal the truth.
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Econometrics Seminar
Du 18/10/2021 de 16:00 à 17:15
ROTH Jonathan (Brown University)
Efficient Estimation for Staggered Rollout Designs
écrit avec Co-author: Pedro Sant'Anna
This paper studies efficient estimation of causal effects when treatment is (quasi-) randomly rolled out to units at different points in time. We solve for the most efficient estimator in a class of estimators that nests two-way fixed effects models and other popular generalized difference-in-differences methods. A feasible plug-in version of the efficient estimator is asymptotically unbiased with efficiency (weakly) dominating that of existing approaches. We provide both t-based and permutation-test based methods for inference. We illustrate the performance of the plug-in efficient estimator in simulations and in an application to Wood et al. (2020a)'s study of the staggered rollout of a procedural justice training program for police officers. We find that confidence intervals based on the plug-in efficient estimator have good coverage and can be as much as five times shorter than confidence intervals based on existing state-of-the-art methods. As an empirical contribution of independent interest, our application provides the most precise estimates to date on the effectiveness of procedural justice training programs for police officers.
Régulation et Environnement
Du 18/10/2021 de 12:00 à 13:15
Salle R2-21 - Campus Jourdan 75014 PARIS
MARBLER Alexander (University of Graz)
Water Scarcity, Agriculture, and Local Economic Activity: A Global Analysis