Working Papers


Directed Innovation across Space

Research Question: How does the geography of innovation respond to changes in economic fundamentals, and what are the consequences for aggregate growth and welfare?

Methodological Contributions:
(1) Introduce endogenous, directed, and microfounded innovation in a
dynamic spatial model;
(2) Decompose the welfare impacts from shocks to fundamentals into
transitory and long-run growth components


The Changing Geography of American Innovation


Research Question: How has the geography of U.S. innovation changed over time and what are the main drivers of this trend?


The Economic Effects of Climate Change in
Dynamic Spatial Equilibrium

(joint with Ivan Rudik, Gary Lyn, Ariel Ortiz-Bobea)

R&R, Journal of Political Economy: Macroeconomics

Research Question: What are the welfare effects of general equilibrium adaptation via trade and migration in response to climate change?

Methodological Contributions:
(1) Model-consistent estimating equations to identify climate impacts on productivity and amenities from temperature shocks;
(2) Quantitative decomposition of general equilibrium adaptation channels (trade, migration, industry switching) to shocks in fundamentals in a
dynamic spatial model


Work in Progress


The Geography of Technology Vintages
(joint with Bernardo Ribeiro, Anh Tran)


Research Question: Why are newer technology vintages
disproportionately created in high-skill regions?


Methodological Contribution: Introduce technology vintages in a
dynamic spatial model with endogenous and directed innovation


The Geography and Spatial Networks of Innovation


Research Question: What drives the rising intensity of cross-region
coinventor networks and what are the aggregate implications?