MATTHEW ZAHN

Matthew Zahn

In the Fall of 2025, I will be joining the Strategy, Economics, Ethics, and Public Policy group at the Georgetown McDonough School of Business as an Assistant Professor.

My research focuses on industrial organization with an emphasis on healthcare topics.

matthew.zahn [at] jhu.edu

@MattVZahn

WORKING PAPERS

Entry and Competition in Insurance Markets: Evidence from Medicare Advantage. January 2025.

2024 International Health Economics Association Best Student Paper
Submitted.

Who Protests, What Do They Protest, and Why? with Erica Chenoweth, Barton H. Hamilton, Hedwig Lee, Nicholas W. Papageorge, and Stephen Roll. December 2024 [NBER Working Paper No. 29987].

Submitted. Press: The Atlantic

Marginal Treatment Effects as a Random Coefficients Model, with an Application to the Labor Supply Effects of Welfare Program Participation with Robert A. Moffitt. August 2024, [NBER Working Paper No. 26028].

Submitted.

Modeling Dynamic Disease-Behavior Feedbacks for Improved Epidemic Prediction and Response with Hongru Du, Sara Loo, Tijs Alleman, Shaun Truelove, Bryan Patenaude, Lauren Gardner, Nicholas W. Papageorge, and Alison Hill, November 2024, medRxiv.

PEER-REVIEWED PUBLICATIONS

Socio-Demographic Factors Associated with Self-Protecting Behavior during the Covid-19 Pandemic with Nicholas W. Papageorge, Michèle Belot, Eline van den Broek-Altenburg, Syngjoo Choi, Julian C. Jamison, and Egon Tripodi. 2021 Journal of Population Economics 34, 691–738. [NBER Working Paper No. 27378]

Press: MarketWatch, VoxEU

OTHER PUBLICATIONS

Modeling to Inform Economy-Wide Pandemic Policy: Bringing Epidemiologists and Economists Together with Michael Darden, David Dowdy, Lauren Gardner, Barton H. Hamilton, Karen Kopecky, Melissa Marx, Nicholas W. Papageorge, Daniel Polsky, Kimberly Powers, and Elizabeth Stuart. 2022 Health Economics 31(7), 1291–1295. [NBER Working Paper No. 29475]

Press: The New York Times

Behavior During a Pandemic with Emma Kalish and Nicholas W. Papageorge. July 2020, IZA World of Labor.

WORK IN PROGRESS

Do Hospital Mergers Make Patients Less Safe? with Michael Darden and Zenon Zabinski.

Robust Risk Adjustment. with Aaron Banks, Pietro Tebaldi, and Benjamin Vatter.

GRANTS

Do Hospital Mergers Make Patients Less Safe? with Michael Darden and Zenon Zabinski.

$20,000 grant from the Hopkins Business of Health Initiative

Who Protests, What Do They Protest, and Why? with Nicholas W. Papageorge.

$3,000 grant from the Johns Hopkins SNF Agora Institute

MISCELLANEOUS

REPLICATIONS

Asymmetry in the Business Cycle: Friedman's Plucking Model with Correlation Innovations, Tara M. Sinclair. Studies in Nonlinear Dynamics and Econometrics, 2010.

Converted primary GAUSS programs into R functions.

Consumption and Portfolio Choice Over the Life Cycle, João F. Cocco, Francisco J. Gomes, and Pascal J. Maenhout. The Review of Financial Studies, 2005.

Project using Econ-Ark toolkit. Collaboration with Mateo Velásquez-Giraldo.

Why are the Beveridge-Nelson and Unobserved-Components Decomposition of GDP so Different? James C. Morley, Charles R. Nelson, and Eric Zivot. The Review of Economics and Statistics, 2003.

Converted GAUSS uc_ur.opt and arima212.opt programs into R functions.

PUBLIC SPEAKING

Distinguished Scholar Speech to the Columbian College Graduating Class of 2015.

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