I am an Evidence Synthesis and Research Lead at the University of Chicago, where I work with the Development Innovation Lab and the Innovation Commission for Climate Change, Food Security, and Agriculture. I’m interested broadly in development and environmental economics, industrial organization, and applied econometrics. I completed my PhD in Agricultural & Applied Economics at the University of Wisconsin-Madison.

Click here to download my full CV.


Peer-Reviewed Publications
Spillovers without social interactions in urban sanitation (2024), American Economic Journal: Applied Economics
with: Molly LipscombLaura SchechterJessica Zhu
Journal Link Working Paper Link (WP version: October 2022)

We run a randomized controlled trial coupled with lab-in-the-field social network experiments in urban Dakar. Decision spillovers and health externalities play a large role in determining uptake of the sanitation technology, with decision spillovers being largest among households that don’t receive significant subsidies. There is no evidence that the spillovers are explained by social forces in general, nor that they are explained by specific social mechanisms such as learning from others, social pressure, or reciprocity. We do find evidence of a fourth, non-social, mechanism impacting decisions: increasing health benefits. As more neighbors adopt the sanitary technology, it becomes more worthwhile for other households to adopt as well.

Privatization of public goods: Evidence from the sanitation sector in Senegal (2023), Journal of Development Economics
with: Jared GarsJean-François HoudeMolly LipscombLaura Schechter
Journal Link (open access)

Privatization of a public good (the management of sewage treatment centers in Dakar, Senegal) leads to an increase in the productivity of downstream sewage dumping companies and a decrease in downstream prices of the services they provide to households. We use the universe of legal dumping of sanitation waste from May 2009 to May 2018 to show that legal dumping increased substantially following privatization–on average an increase of 74%, or an increase of about 1640 trips to treatment centers each month. This is due to increased productivity of all trucks, not just those associated with the company managing the privatized treatment centers. Household-level survey data shows that downstream prices of legal sanitary dumping decreased by 5% following privatization, and DHS data shows that diarrhea rates among children under five decreased in Dakar relative to secondary cities in Senegal following privatization with no similar effect on respiratory illness as a placebo.

Measuring willingness to pay for reliable electricity: evidence from Senegal (2021), World Development
with: Agnieszka Postepska • Leopold Sarr
Journal Link (open access)

The reform of energy subsidies in Iran: The role of cash transfers (2015), Emerging Markets Finance and Trade
with: Djavad Salehi-Isfahani • Bryce Wilson Stucki
Journal Link

Working Papers
Relaxing multiple agricultural productivity constraints at scale
with: Maya Duru • Kim Siegal • Emilia Tjernström
(Revise and Resubmit, Journal of Development Economics)
Working Paper Link (May 2023, previous version NBER Working Paper No. 26054, July 2019)

No single constraint can explain the stagnant agricultural productivity growth in sub-Saharan Africa. Most interventions that relax individual barriers to productivity have delivered disappointing results. We evaluate an at-scale program that targets several productivity constraints with a bundled intervention, using a randomized controlled trial in western Kenya. Program participation increases maize yields by 26%, total maize output by 24%, and profits by 17%. While we cannot directly test whether the program’s success is due to its bundled nature, we find patterns in the data that are consistent with this hypothesis.

Contracting and quality upgrading: evidence from an experiment in Senegal
with: Tanguy BernardOuambi Yameogo
Working Paper Link (January 2023)

Blog and podcast coverage : World Bank Development Impact BlogNOVAFRICA Development Economics Job Market Talks Podcast

We conduct a randomized experiment with groundnut producers in Senegal to address barriers to quality upgrading and access to international markets. We offer a bundled flexible contract that provides credit, training, and a price premium guarantee to encourage use of a new quality-improving technology. Producers randomly offered the contract are significantly more likely to purchase the technology. In areas where quality is otherwise lower due to agro-climatic conditions, producers are significantly more likely to comply with international standards. Adoption falls two years after our intervention when a price premium guarantee is no longer available, but remains persistently higher among previously-treated producers. We find that producers change their commercialization behavior when the contract is active, opting to sell more to cooperatives and less to other buyers, but this change is small in magnitude and does not persist to the subsequent season.

Recognizing a good deal: short term subsidies and the dynamics of public service use
Working Paper Link (July 2024)

I study the dynamics of household adoption of a public service in response to short-term subsidies. I exploit spatial variation in exposure to subsidies which induced consumers to use a publicly-provided matching platform for sanitation services in Dakar, Senegal. Using platform administrative data, I show that neighborhoods exposed to short-term subsidies are significantly more likely to use the platform after subsidies end, but this effect declines gradually to zero over time. Following a subsequent city-wide subsidy campaign, increased adoption re-emerges in previously-subsidized neighborhoods. I explore within-neighborhood spillovers as a mechanism and show that a substantial fraction of increased long-run adoption comes from new users.

Health, pro-sociality, and market rewards in agricultural quality decisions
with: Gashaw AbateTanguy BernardFatou Fall
(draft available upon request)

In many contexts, farmers are both producers and consumers of food, and the returns to food safety investment are impacted by the proportion that is sold, consumed, and donated within communities. We conduct an artefactual lab-in-the-field experiment in Senegal to elicit willingness to pay (WTP) for information about food safety and randomly vary the proportions by which food products are destined for consumption, sale, and donation. We first establish that farmers are willing to pay for information on food safety, even in the absence of a market reward. Farmers are willing to pay relatively more for information when it is more relevant to their health on average than the health of others, but this difference is small in magnitude relative to the average WTP. We randomize an informative video about the specific health risk in our setting. Treated farmers exhibit increased WTP in all scenarios. Our findings suggest market rewards, information, and pro-sociality may be complementary in resolving food safety challenges when decisions are interlinked.

Using market mechanisms to improve sanitation at scale
with: Jared Gars • Shoshana Griffith • Jean-François HoudeMolly Lipscomb • Mbaye Mbeguere • Sarah Nehrling • Laura SchechterJessica Zhu
(draft available upon request)

Work in Progress
Sustainable spillovers: the health and environmental impacts of switching from generators to solar energy
with: Lori BeamanR SubramanianEmilia Tjernström
(Pilot in progress)

The compounded effects of COVID-19 and other crises on SMEs in Burkina Faso
Credit for climate change: Promoting and scaling asset-collateralized loans for water tanks
with: Kevin CarneyTomoko HarigayaMichael Kremer
(RCT in progress)

Project summary: PxD blog

Better borrowing to promote access to water and improve dairy farming in Kenya
with: Suleiman AsmanKevin CarneyMichael KremerGautam Rao
(RCT in progress)

Quality and competition in the market for agricultural inputs
Measurement error, validation data, and program evaluation
Pricing complexity and consumer behavior: evidence from a lab experiment

Press Appearances

"The Poop Cartel," Planet Money (Episode 855, July 25, 2018); Goats and Soda / All Things Considered (July 27, 2018)

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