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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 | CWP09/25
Identifying heterogeneous supply and demand shocks in European credit markets

We propose a new model in which relationship-specific supply and demand shocks are non-parametrically identified in… Continue reading.

Oliver De Jonghe, Daniel Lewis
February | CWP08/25
Point-identifying semiparametric sample selection models with no excluded variable

Sample selection is pervasive in applied economic studies. This paper develops semiparametric selection models that achieve… Continue reading.

Dongwoo Kim, Young Jun Lee
February | CWP07/25
Identification of treatment effects under limited exogenous variation

Multidimensional heterogeneity and endogeneity are important features of a wide class of econometric models. With control… Continue reading.

Whitney K. Newey, Sami Stouli
February | CWP06/25