Calendrier du 27 mars 2023
Roy Seminar (ADRES)
Du 27/03/2023 de 17:00 à 18:15
Salle R1-09, Campus Jourdan, 75014 Paris
MORRIS Stephen (MIT)
*Screening with Persuasion joint with Dirk Bergemann and Tibor Heumann
We consider a general nonlinear pricing environment with private information. The seller can control both the signal that the buyers receive about their value and the selling mechanism. We characterize the optimal menu and information structure that jointly maximize the seller's profits. The optimal screening mechanism has finitely many items even with a continuum of values. We identify sufficient conditions under which the optimal mechanism has a single item. Thus the seller decreases the variety of items below the efficient level as a by-product of reducing the information rents of the buyer.
Econometrics Seminar
Du 27/03/2023 de 16:00 à 17:15
PSE, Campus Jourdan, Salle R1-15
DE CHAISEMARTIN Clément (Sciences Po)
More Robust Estimators for Panel Bartik Designs, With An Application to the Effect of Chinese Imports on US Employment.
écrit avec Ziteng Lei
We show that panel Bartik regressions identify non-convex combinations of location-and-period-specific treatment effects. Thus, those regressions could be biased in the presence of heterogeneous effects. We propose two alternative correlated-random-coefficient (CRC) estimators, that are more robust to heterogeneous effects. We revisit Autor et al. (2013), who use a panel Bartik regression to estimate the effect of imports from China on US employment. Their regression estimates a highly non-convex combination of effects, and our CRC estimators are small and insignificant: without assuming constant effects, one cannot conclude that imports from China had a significantly negative effect on US employment.
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Régulation et Environnement
Du 27/03/2023 de 12:00 à 13:15
Salle R1-09, Campus Jourdan, 75014 Paris
WAGNER Katherine (UBC)
*Management Practices and Climate Policy in China
"We investigate how management quality moderates the impact of carbon
pricing on Chinese firms. Based on interviews with managers and lead
engineers at manufacturing firms in Hubei and Beijing, we construct a
novel index on climate-change related management practices and link it
to firm data from various sources. We document that well-managed firms
are on average more productive and engage more in green innovation than
the rest. We conduct an event study of the introduction of a regional
cap-and-trade scheme for CO2 in Beijing and find that treated firms
reduced coal consumption more than control firms, but this effect is
statistically significant only for well-managed firms. In the absence of
such firms, our empirical estimates imply that aggregate coal use would
have increased rather than decreased following the introduction of
carbon pricing. This highlights the importance of good management
practices for market-based climate policies to be effective. "