Gravity Modeling Group

Primary Contributors

Serge Shikher, Ph.D., Project Leader
Lead International Economist, Office of Economics

Saad Ahmad, Ph.D.
Lead International Economist, Office of Economics

Heather Wickramarachi, Ph.D.
Senior International Economist, Office of Industries

Lin Jones
Lead International Economist, Office of Economics

Chang Hong
International Economist, Office of Economics

Tamara Gurevich, Ph.D.
Lead International Economist, Office of Economics

Matt Reesman, Ph.D.
International Economist, Office of Economics

Erin Gibson, Ph.D.
International Economist, Office of Economics

Scott Sommers, Ph.D.
International Economist, Office of Economics

Contributing Members

Samantha Schreiber, International Economist, Office of Economics

Ross Jestrab, International Economist, Office of Economics

Former Contributing Members

Tricia Mueller, Peter Herman, Blaize Giangiulio, Jeffrey Horowitz, Ricky Ubee, Caroline Peters,

Carlos Payan, Nabil Abbyad, Meryem Demirkaya, Grace Kenneally, Austin Drenski

Visiting Scholars and External Contributors

Yoto V. Yotov, Professor of Economics, Drexel University, 2019 - present

Mario Larch, Professor of Economics, University of Bayreuth, 2020 - present

Rafael Dix-Carneiro, Professor of Economics, Duke University, 2022 - present

Michael Sposi, Associate Professor of Economics, Southern Methodist University, 2026 - present

Nuno Limão, Professor of Economics, University of Maryland, 2020 - 2022

James E. Anderson, Professor of Economics, Boston College, 2018