Research

Publications

Falling Living Standards during the COVID-19 Crisis: Quantitative Evidence from Nine Developing Countries
(with many co-authors)
Science Advances 7(6). Feb 2021.
Abstract
Despite numerous journalistic accounts, systematic quantitative evidence on economic conditions during the ongoing COVID-19 pandemic remains scarce for most low- and middle-income countries, partly due to limitations of official economic statistics in environments with large informal sectors and subsistence agriculture. We assemble evidence from over 30,000 respondents in 16 original household surveys from nine countries in Africa (Burkina Faso, Ghana, Kenya, Rwanda, Sierra Leone), Asia (Bangladesh, Nepal, Philippines), and Latin America (Colombia). We document declines in employment and income in all settings beginning March 2020. The share of households experiencing an income drop ranges from 8 to 87% (median, 68%). Household coping strategies and government assistance were insufficient to sustain precrisis living standards, resulting in widespread food insecurity and dire economic conditions even 3 months into the crisis. We discuss promising policy responses and speculate about the risk of persistent adverse effects, especially among children and other vulnerable groups.
| Paper | Publication | Replication | Policy Brief | Coverage: One Two Three


Working Papers

Got (Clean) Milk? Organization, Incentives, and Collective Action in Indian Dairy Cooperatives
(with Manaswini Rao)
Submitted
Abstract
Smallholder producers in developing countries often collaborate in teams that take advantage of scale economies and allocate surplus among members. We experimentally evaluate team-level incentive contracts for quality upgrading among Indian dairy cooperatives where there is a risk of free-riding because individual quality cannot be traced. Incentives improve aggregate quality, with evidence of increased effort from both producers and cooperative managers. However, several managers decline incentive payments when they cannot control how payment information is disclosed to cooperative members. Survey evidence indicates publicity lowers managerial returns, suggesting transparency-based efforts to constrain elites can undermine the core policy goal.
| Paper | VoxDev

External Validity and Implementation at Scale: Evidence from a Migration Loan Program in Bangladesh
(with Harrison Mitchell, A. Mushfiq Mobarak, Karim Naguib, and Maira Reimao)
Abstract
This paper presents results from an experimental evaluation of a large-scale migration loan program that offers a short-term low-interest migration loan to hundreds of thousands of landless rural workers during the agricultural lean season in northern Bangladesh. Pilot evaluations found the loan offer to increase the rate of temporary migration by 25–40 percentage points. At scale this effect falls to only 5 percentage points, with a 10 percentage point increase in migration in the regions where the pilot took place and no effect in newly treated regions despite participants being observationally similar across space. To account for treatment effect attenuation, we introduce a theory of program administration that leads implementing agents to systematically mistarget intended program beneficiaries. Mistargeting occurs because program benefits are concentrated among those induced to migrate by the loan offer, but capacity constraints at scale lead effort to be directed toward those already planning to migrate without a loan. We present evidence consistent with this theory that the characteristics that predict pre-loan migration are strongly correlated with the likelihood of remembering the loan offer, and show that mistargeting can quantitatively account for the diminished treatment effect. We rule out two alternative explanations: First, the geographically clustered randomization design reveals that there is, if anything, general equilibrium crowd-in rather than crowd-out of migrants. Second, we estimate conditional treatment effects and find that changes in population characteristics over time have little impact. The mistargeting identified in this study has the potential to undermine the effectiveness of a number of common development policies.
| Paper | Policy brief

Migration and the Labor Market Impacts of COVID-19
(with many co-authors)
Revise and resubmit: European Economic Review
Abstract
Using detailed microdata, we document how migration-dependent households are especially vulnerable during the COVID-19 pandemic. We create pre- and post-COVID panel datasets for three populations in Bangladesh and Nepal, leveraging experimental and observational variation in prior migration dependence. We report 25% greater declines in earnings and fourfold greater prevalence of food insecurity among migrant households since March. Causes include lower migration rates, less remittance income per migrant, isolation in origin communities, and greater health risks. We compile a large set of secondary data to demonstrate the extent of vulnerability worldwide and conclude with recommendations for policy targeted at migrants.
| Paper

Declining Mobility among Mexican-Born Workers in the US Labor Force
(with Julian Arteaga)
Submitted
Abstract
Geographic mobility is a key component of labor supply elasticity. In this paper we document a reversal in the relative migration elasticity of Mexican-born workers in the U.S. In 2000–2010, Mexican immigrants’ choice of location within the U.S. was more responsive to local economic conditions than that of native-born Americans, with the gap expanding over the decade. This pattern subsequently reversed, and by 2020 native-born workers had a greater internal migration elasticity than their Mexican-born counterparts. This reversal is unique to immigrants of Mexican origin and not explained by the occupational or demographic composition of the Mexican-born labor force.
| Paper

Implementer Identity Effects in Program Evaluation
(with Travis Lybbert)
Abstract
Implementer effectiveness can be as important as policy design in shaping impacts of development interventions. Prior research has documented systematic differences in policy impacts based on the identity of the implementer \citep[e.g.][]{Vivalt2020}. We examine how implementer identity affects program evaluation in the context of a package of agricultural subsidies and extension to promote the production of pulse crops in Bihar, India. This program was implemented as a two-year randomized controlled trial by local NGOs with a history of engagement in the area. Endline data includes a laboratory-style incentive-compatible elicitation of participants’ demand for unsubsidized seeds, in which we experimentally vary the salience of the implementer. In one variation we explicitly advertise our evaluation of the implementer’s efforts, while in the other we describe the exercise as a study on the viability of pulse farming. We find that increasing implementer salience lowers demand for pulse seeds, likely because the program was generally viewed as a failure due to adverse weather. However, the negative salience effect is 3–4 times greater in control relative to treatment villages. This disparity is driven largely by program beneficiaries whose demand increases by 20–25\% when the implementer is made salient. Salience also differentially lowers demand among those who had participated in prior NGO initiatives that delivered benefits for free, consistent with price anchoring. Our results conform to a model where program beneficiaries reciprocate by delivering positive evaluations of implementers. We demonstrate they may take costly actions to do so in an incentive-compatible demand elicitation, and the effect is quantitatively large: the estimated negative treatment effect is attenuated by 66\% when evaluation is made salient. These findings suggest that program evaluation with popular implementers may be subject to a type of Hawthorne effect that systematically biases in favor of success.
| Paper

Does Survey Mode Matter? Evidence from Phone and In-Person Agricultural Surveys in India
(with Ellen Anderson, Travis Lybbert, Rupikah Singh, and Daniel Stein)
Abstract
Phone surveys have become more common in developing countries and are increasingly used for data collection in randomized control trials. However, the consequences of switching from in-person to phone surveys in the context of RCTs are not fully understood. Of particular concern is whether measurement error in outcomes collected from phone surveys could bias treatment effects. We compare responses from phone and in-person surveys conducted for an overlapping set of questions and households that were part of an RCT studying the effects of a pulses farming promotion program on crop production in Bihar, India. We find differences in properties of the outcomes distributions between the phone and in-person surveys. The differences are driven by both selection and mode effects. However, we find similar treatment effects of the program by survey mode for both intent to treat and local average treatment effects.
| Paper available upon request

Skimming off the Top: The Unintended Consequences of Technology Adoption in the Indian Dairy Industry
Abstract
In India, village dairy cooperatives collect milk from rural producers and sell it in bulk to the regional market. In the last decade the Karnataka Milk Federation, the largest organizer of cooperatives in the Indian state of Karnataka, has invested heavily in bulk milk chillers (BMCs) that drastically lower the time between production and refrigeration. These chillers, by lowering the perceived risk of penalty for spoilage, both raise the potential returns to high quality milk and increase the temptation to engage in unsavory practices such as milk dilution. Risk declines both because chillers better preserve milk and because monitoring at chilling stations is more lax. Therefore the new technology both raises the returns to quality and lowers the cost of cheating. I investigate the net effects of village access to a BMC on the production process through a difference-in-difference approach using village-level data from the district of Kolar. I find that production quantity increases with access to a chiller but average production quality decreases, as does the likelihood of being punished for low quality. The results are consistent with a model in which villagers increase their use of dishonest practices such as dilution after being connected to a BMC because they face less risk of being punished. The effect size is strongest in villages that had the highest quality ex ante, suggesting an equilibrium shift brought on by the change in punishment probability. In addition, I find the strongest evidence of adulteration in villages with fewer outside agricultural options.
| Updated version coming soon

Migration Frictions, Earnings Differentials, and Spatial Misallocation: Evidence from Thailand
Submitted
Abstract
This paper uses revealed-preference location decisions of workers in Thailand to quantify the disutility of labor migration, characterize the migration contribution to labor supply elasticity, and estimate the effect of migration frictions on spatial earnings differentials and labor misallocation. I estimate a spatial equilibrium model using commodity prices as instruments for local earnings to overcome endogeneity and selection, and to identify the NPV returns to potential migration. Estimation employs a novel strategy to accommodate measurement error and choice-based sampling. I find migration contributes 9.5 percentage points to local labor supply elasticity. The disutility from migration is 1.0–1.2 times annual earnings; alleviating this friction would induce a quarter of the population to relocate and would lower spatial earnings variation by 20%. However, gains would be realized primarily in non-wage utility with a modest a 3% increase in national product, suggesting migration frictions play a limited role in productive misallocation.
| Paper

Seasonal Poverty and the COVID-19 Pandemic
(with Arjun Kharel, A. Mushfiq Mobarak, and Corey Vernot)
Revise and resubmit: Applied Economics Policy and Perspectives
Abstract
75\% of the world’s poor reside in rural areas where the local economy is tied to agriculture. We interpret new panel data on COVID-19 from Nepal and Bangladesh in relation to agricultural seasonality. Conditions in April–June 2020 were comparable to a typical lean season even though the pandemic arrived at harvest time. Income losses stem from both depressed local employment as well as lower migration and remittances. We also document indirect adverse health impacts on nutrition and mental health. Findings are specific to the nature of economic activity at harvest, and effective pandemic policy must evolve with the agricultural season.
| Paper


In Progress

Bihar Pulses Cluster Project Evaluation
(with Tomoé Bourdier, Caitlin Kieran, and Travis Lybbert)
RCT Registration: One Two Three

Market Effects of a Revenue Insurance Product in Northern Ghana
(with Jon Einar Flatnes and Richard Gallenstein)
RCT Registration: One | Project page

Mexican migration flows and agricultural labor markets in the U.S.
(with Julian Arteaga)

Lights at Night and Measures of Household Wellbeing
(with Xiaoman Luo)

Searching for Poverty Traps in Household Panel Data
(with Mo Alloush)

Asymmetric Information with a Noisy Signal