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Carbon regulation and competition in the European airline industry

The European Union Emissions Trading System is set to substantially increase the effective carbon price faced… Continue reading.

Ertian Chen, Lichao Chen, Lars Nesheim
March | CWP04/26
Optimal formula instruments

When estimating the effects of treatments defined by complex formulas, researchers often use simple functions of… Continue reading.

Kirill Borusyak, Peter Hull
March | CWP03/26
Nonparametric identification of demand without exogenous product characteristics

We study identification of differentiated product demand from market level data when product characteristics can be… Continue reading.

Kirill Borusyak, Jiafeng Chen, Peter Hull, Lihua Lei
February | CWP02/26
Weak instrument bias in impulse response estimators

We approximate the finite-sample distribution of impulse response function (IRF) estimators that are just-identified with a… Continue reading.

Daniel Lewis, Karel Mertens
January | CWP01/26