Inputs, Incentives, and Complementarities in Education: Experimental Evidence from Tanzania

Isaac Mbiti, Karthik Muralidharan, Mauricio Romero, Youdi Schipper, Constantine Manda, Rakesh Rajani

NBER Working Paper No. 24876
Issued in July 2018, Revised in January 2019

---- Acknowledgments ----

We are grateful to Joseph Mmbando who superbly oversaw the implementation team. We thank Oriana Bandiera, Prashant Bharadwaj, Julie Cullen, Gordon Dahl, Taryn Dinkelman, Eric Edmonds, Caroline Hoxby, David Figlio, Kelsey Jack, Kirabo Jackson, Jason Kerwin, Prashant Loyalka, Craig McIntosh, Adam Osman, Imran Rasul, Mark Rosenzweig, Abhijeet Singh, Tavneet Suri, Rebecca Thornton and several seminar participants for comments. In addition, we acknowledge the support of Bryan Plummer and the J-PAL Africa staff during the launch of the project. Erin Litzow, Jessica Mahoney, Kristi Post, and Rachel Steinacher provided excellent on-the-ground research support through Innovations for Poverty Action. We also thank Austin Dempewolff, and Ian McDonough for additional research support. The data collection was conducted by the EDI Tanzania team including Respichius Mitti, Andreas Kutka, Timo Kyessy, Phil Itanisia, Amy Kahn and Lindsey Roots, and we are grateful to them for their outstanding efforts. We received IRB approval from Innovations for Poverty Action, Southern Methodist University, UC San Diego, and University of Virginia. The protocol was also reviewed and approved by the Tanzania Commission for Science and Technology (COSTECH). The views expressed herein are those of the authors and do not necessarily reflect the views of the National Bureau of Economic Research.

---- Disclosure of Financial Relationships for Isaac Mbiti ----

This study was funded by Twaweza. However, the academic researchers had complete autonomy on the contents, substantive conclusions and formulation of academic paper.

---- Disclosure of Financial Relationships for Youdi Schipper ----

Youdi Schipper has been working for Twaweza since the start of the study. (However, the Twaweza contract with Innovations for Poverty Action, the research organisation responsible for impact measurement, states: "While all authors shall seek to arrive at mutual agreement, the Principal Investigators (Prof. Karthik Muralidharan and Prof. Isaac Mbiti) shall retain the final say on the contents, substantive conclusions and formulation of academic papers".)

---- Disclosure of Financial Relationships for Rakesh Rajani ----

Funding for this project was provided via Twaweza by a consortium of funders, including DFID-UK, Hewlett Foundation, Hivos, Irish Aid, Sida, and an anonymous donor.

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