“Improving Financial Inclusion Through Digital Savings and Credit”, with Prashant Bharadwaj, Forthcoming, American Economic Review Papers and Proceedings.

“Universal Basic Income in the Developing World”, with Abhijit Banerjee and Paul Niehaus. Annual Review of Economics, Vol. 11, 2019, 959–983.

“There is No Free House: Ethnic Patronage in a Kenyan Slum”, with Benjamin Marx and Thomas Stoker, October 2019. American Economic Journal Applied Economics, Vol. 11 (4), 26-30.

Mobile Money.” Annual Review of Economics, Vol. 9 (2017): 497-520.

"The Long-run Poverty and Gender Impacts of Mobile Money", with William Jack. Science Vol. 354, No. 6317 (2016): 1288-1292.

Press: New York Times, Wall Street JournalMIT News, Vox, The Economist, Washington Post, NPR, Fortune, Popular ScienceReuters (syndicated to Voice of America, Relief Web, Daily Mail, All Africa), Wired, Financial Express, Press Trust of India, India Today, NDTV, iAfrikan, News BTC.

Field Experiments in Developing Country Agriculture”, with Alain de Janvry and Elisabeth Sadoulet. In Handbook of Field Experiments, Vol. 2 (2017): 427-466. Edited by Abhijit Banerjee and Esther Duflo.

Risk Sharing and Transaction Costs: Evidence from Kenya's Mobile Money Revolution”, with William Jack. American Economic Review Vol. 104, No. 1 (2014): 183-223.

PressMIT News; Wired; SlateBusiness WeekVoxeu; The World.


ResourcesSlide Deck (2010); “The Economics of M-PESA”; Latest DataWeb Appendix

Teaching slide deck for this paper

The Economics of Slums in the Developing World", with Benjamin Marx and Thomas Stoker. Journal of Economic Perspectives Vol. 27, No. 4 (2013): 187-210.

PressThe EconomistThe Atlantic CitiesEconomist BlogBloomberg

"Endogenous Emergence of Credit Markets: Contracting in Response to a New Technology in Ghana”, with Rahul Deb. Journal of Development Economics Vol. 101 (2013): 268-283.

"Transaction Networks: Evidence from Mobile Money in Kenya", with William Jack and Adam Ray. American Economic Review Papers and Proceedings Vol. 103, No. 3 (2013): 356-361.

"Documenting the Birth of a Financial Economy", with William Jack,and Thomas Stoker. Proceedings of the National Academy of Sciences Vol. 109, No. 26 (2012): 10257-10262.

Selection and Comparative Advantage in Technology Adoption”. Econometrica Vol. 79, No. 1 (2011): 150-209.

NBER Working Paper #15346;

EGC working paper version

Web Appendix Tables

Teaching slide deck

Data Documentation

Paths to Success: The Relationship Between Human Development and Economic Growth,” with Michael Boozer, Gustav Ranis and Frances Stewart. World Development Vol. 39, No. 4 (2011): 506-522.

Monetary Theory and Mobile Banking: Lessons from the Kenyan Experience”, with William Jack and Robert Townsend. Economic Quarterly Vol. 96, No. 1 (2010): 83-122.