Results

Journal article

Journal of Economic Perspectives:

A practical guide to shift-share instruments

A recent econometric literature shows two distinct paths for identification with shift-share instruments, leveraging either many exogenous shifts or exogenous shares. We present the core logic of both paths and practical...Read more...

Journal article

The Econometrics Journal:

Design-based identification with formula instruments: a review

Many studies in economics use instruments or treatments that combine a set of exogenous shocks with other predetermined variables via a known formula. Examples include shift-share instruments and measures of social or sp...Read more...

Journal article

The Review of Economic Studies:

Revisiting event study designs: robust and efficient estimation

We develop a framework for difference-in-differences designs with staggered treatment adoption and heterogeneous causal effects. We show that conventional regression-based estimators fail to provide unbiased estimates of...Read more...

Journal article

Journal of International Economics:

Are trade wars class wars? The importance of trade-induced horizontal inequality

What is the nature of the distributional effects of trade? This paper demonstrates conceptually and empirically the importance of ?trade-induced horizontal inequality,? i.e. inequality that occurs among workers with the ...Read more...

Journal article

AEA Papers and Proceedings :

Negative weights are no concern in design-based specifications

Recent work shows that popular partially linear regression specifications can put negative weights on some treatment effects, potentially producing incorrectly signed estimands. We show that this is not an issue in desig...Read more...

Journal article

Econometrica:

Non-random exposure to exogenous shocks

We develop a new approach to estimating the causal effects of treatments or instruments that combine multiple sources of variation according to a known formula. Examples include treatments capturing spillovers in social ...Read more...

CEP discussion paper

The distributional effects of trade: theory and evidence from the United States

How much do consumption patterns matter for the impact of international trade on inequality? In neoclassical trade models, the effects of trade shocks on consumers' purchasing power are governed by the shares of imports ...Read more...

CEP discussion paper

Are trade wars class wars? The importance of trade-induced horizontal inequality

What is the nature of the distributional effects of trade? This paper demonstrates conceptually and empirically the importance of "trade-induced horizontal inequality," i.e., inequality brought about by trade shocks that...Read more...

Journal article

Economic Policy:

The role of schools in transmission of the SARS-CoV-2 virus: quasi-experimental evidence from Germany

his paper considers the role of school closures in the spread of the SARS-CoV-2 virus. To isolate the impact of the closures from other containment measures and identify a causal effect, we exploit variation in the start...Read more...

Journal article

The Review of Economic Studies:

Quasi-experimental shift-share research designs

Many studies use shift-share (or ?Bartik?) instruments, which average a set of shocks with exposure share weights. We provide a new econometric framework for shift-share instrumental variable (SSIV) regressions in which ...Read more...