About Us


John Johnson
Senior Director
Room 4227, Jacobs Center


John joined Kellogg in 2016. He has served in numerous roles at the intersection of economics, mathematical modeling, and technology, including most recently as the founding director of the Research Support unit at the Stanford Graduate School of Business. His areas of expertise include novel data collection, text-based data transformation and analysis, large scale data systems, design thinking, and talent development.

As Senior Director, he oversees the entire Research Support unit at Kellogg, including the ongoing development of new capabilities and services that the team offers. John earned an MA (ABD) in Economics from Stanford University.
 Jie (Jay) Cao
Senior Research Associate
Room 4219, Jacobs Center 


Jie (Jay) Cao joined Kellogg in 2015. As Senior Research Associate, he works to manage and document research data and consult on software packages for statistical and numerical analysis.

Jay earned his PhD in Economics from the University of Toronto. His research interests are in the fields of macroeconomics, growth and development, and labor.

Maja Kos
Senior Academic Editor and Translation Manager
Room 4219, Jacobs Center


Maja Kos joined Kellogg in 2003. As Senior Academic Editor and Translation Manager, she provides editing support to tenure-line faculty. She also serves as the copy editor for Kellogg Insight and manages the translation of Insight articles for a global audience.

In addition to her work at Kellogg, Maja is a freelance editor and translator, specializing in the fields of medicine and economics. Her working languages include English, Croatian, and French.

Maja earned her BA in French Language and Literature from Boston College. During her undergraduate studies, she spent one year at the Sorbonne Nouvelle in Paris. She earned her MA in French Translation from the Middlebury Institute of International Studies at Monterey.
Frank Limbrock
Senior Research Associate
Room 627, Jacobs Center


Frank Limbrock joined Kellogg in 2010. He is an applied microeconomist whose research focuses on health economics and industrial organization. His recent projects have examined the role of non-pecuniary incentives in prescription-drug choice and substitution between branded and generic drugs. Frank holds a PhD in Economics from Yale University, an MSc from the London School of Economics, and a Diploma from the University of Cologne.