Research

Publications

"Ride-Sharing and the Geography of Consumption Industries", with Heyu Xiong
The Economic Journal (Aug, 2023)

Presentations: (2022) U of Queensland, U of Melbourne, Bocconi. (2020): Meeting of the Urban Economics Association, NYUAD 1st Macroeconomics Workshop. (2019): SMU Conference on Urban and Regional Economics^, Illinois Economics Association^, Aarhus University

Exploiting both the staggered entry across cities and the precise geographic boundary of Uber services, we find that Uber’s entry into a city caused significant growth in the consumption industries. We provide evidence consistent with Uber increasing consumer mobility by reducing the economic cost of travel.

Working Papers

"The Home Market Effect in a Home-Biased Geography" [online appendix]
Revise and Resubmit, Journal of International Economics

Presentations: (2022) EUI, LSE, Einaudi, Bologna, Bocconi (2019) Econalanya, Aarhus University, Northwestern University

Developed in the 1980s, the Home Market Effect (HME) predicts that locations with a relatively large consumer base for an industry become a net-exporter in the industry. Yet the theory is valid in only two-location models. I generalize the validity in an arbitrary number of locations to an empirically relevant case: a home-biased geography.

"Spatial Wage Inequality within the Firm", with Wifag Adnan

Presentations: (2023) U of Kent, SOLE Meeting, (2022): AASLE Meeting, Urban Economics Association North America Meeting

Location doesn't explain much of wages for workers employed in the same firm. We find this is equally due to firms selecting into similar locations, as it is due to firm-wide wage setting.

"Bounding High Dimensional Comparative Statics"
Presentations: (2023): Bank of England, Network Science and Economics, U of Queensland, (2022): Osaka University, Aarhus University. University of Copenhagen, William & Mary, UNSW, Bocconi

I derive bounds on comparative statics that do not require inverting the Jacobian. The result is an expression that is more tractable and identified using low dimensional sufficient statics. I require only that the Jacobian is diagonally dominant. I demonstrate application in a range of  models of economic networks.

"Fiscal Multipliers in Integrated Local Labor Markets"

Presentations: UEA, Aarhus University, DEGIT, NBER Summer Institute ITM, Northwestern University

The size of the aggregate fiscal multiplier depends on the geographic distribution of the fiscal stimulus. In a spatially rich framework,  I structurally estimate how this heterogeneity varies with interstate trade exposure. My results characterize a geography-dependent fiscal multiplier: greater increases in national GDP are predicted when the stimulus in concentrated in states that operate trade deficits with other states.

*: presentation in the future^: presentation by co-author.