Research

Working Papers:


Abstract: Search frictions can be substantial in rural markets in developing countries and can raise the cost of learning market information. For small firms, search frictions interfere with learning about new suppliers in their upstream market, and raise the cost of meeting new customers in their downstream market. I experimentally investigate whether lowering upstream and downstream search costs for small firms in rural Tanzania improves firm outcomes and alters the incentive to engage in relational contracts with suppliers and customers. Using a randomized experiment of 507 small firms, I study the impact of a digital phonebook that lowers the cost of accessing new business and customer contacts. Participating firms are split into a control and treatment group with two variations: 1) a phonebook listing that is visible to upstream suppliers in urban areas, and 2) a phonebook listing that is visible to downstream customers in rural areas. I find that treated firms increase relational contracting with their suppliers and decrease it with their customers. Yet, there is no strong evidence that the number of new customers or suppliers increases. It suggests that being listed in the phonebook caused firms to update their valuation of relational contracts and respond by negotiating better terms with suppliers and customers.

[AEA Social Science Registry]

Coverage: World Bank Development Impact Blog


"Droughts and the Food Retail Sector in Kenya"


Abstract: In the absence of insurance and credit markets, the effect of adverse environmental shocks on rural firms is ambiguous because drought shifts both demand and supply curves. I use spatial and temporal variation in the 2016-2017 drought in Kenya to characterize the direct and indirect effects of drought-induced food insecurity on local firm outcomes. Firms in areas directly affected by drought have lower sales, profits, and hire fewer workers than firms in non-drought areas. Firm entry also increases in drought areas compared to non-drought areas, consistent with prior evidence that farming households form new businesses as a coping strategy following shocks. Sub-sector analysis reveals substantial heterogeneity. Service firms fare better than retail firms. But examining retail sub-sectors shows that firms selling higher-value food products (meat/fish and fruits/vegetables) experience greater declines than staple grain sellers in markets directly affected by drought, while firms selling high-value foods increase sales in non-drought areas. This is consistent with consumers in drought regions decreasing consumption of non-necessities. [Please email for latest draft]


"The Role of Rural Firms in Smoothing Price Variation: A Case Study from Tanzania"


Abstract: Price variation is a typical feature of markets in developing countries. Rural firms face substantial price variation when purchasing goods (inputs) that they re-sell as outputs. How much of this input variation passes through to prices for rural customers? Rural households rely on local businesses to purchase household food staples and other essential commodities. Yet, relatively little economic literature examines retail passthrough rates of these essential food staples to clarify how it affects local food security. I use a panel of input and output prices for 230 urban firms and 240 rural firms to evaluate passthrough from idiosyncratic input price shocks on key commodities sold through urban-to-rural supply chains. I find that rural firms smooth both negative and positive input price shocks more than urban firms. By exploring possible mechanisms, I find suggestive evidence that smaller community size is associated with lower output prices, suggesting that social ties may play a role. At the same time, competitive pressure matters as well - rural firms who face new entrants and have higher absolute number of competitors have higher passthrough rates, consistent with a competitive market framework. [Please email for latest draft]


Works in Progress

"Land Tenure in Tanzania: Economic Loss Experienced from Exclusion of Women and Youth in Land Security," with Emmanuel Mwan'gonda, Data collection completed

"Overcoming Collective Marketing Challenges in Warehouse Storage to Link Smallholder Farmers to Markets in Tanzania," with Hosea Mpogole

"Sub-Contracting for Clean Water Distribution in Haiti," with Joakim Weill


Policy Publications

"Estimated Cost of the Withdrawal of the Insecticide Chlorpyrifos for Six Major California Crops." H. Wei, R.E, Goodhue, K. Mace, J. Rudder, T. Tolhurst, D. Tregeagle, B. Grafton-Cardwell, I. Grettenberger, H. Wilson, R. Van Steenwyk, J. Steggall. ARE Update 23(4)(2020):13-15. University of California Giannini Foundation of Agricultural Economics.

"Agribusiness Investment Clusters and Private Sector Accelerators" P. Biscaye, C. Clark, K. Javaid, A. Lawrence, M. Neidhardt, K. Panhorst-Harris, J. Rudder, C. L. Anderson, T. Reynolds. EPAR Technical Report #302. (2015)

"Crop Planting at the Extensive and Intensive Margins: Evidence from Tanzania’s National Panel Survey." C. McKee, J. Rudder, A. Golenko, C.L. Anderson, M. Gugerty. EPAR Technical Report #245. (2015)

"Review of Agricultural Adoption, Extension, and Farmer Learning Practices within Bill and Melinda Gates Foundation Grant Activities." C. L. Anderson, K. Javaid, M. Lane, M. Niedhart, J. Rudder. EPAR Technical Report #291. (2015)

"Social Costs of Alcohol in Sub-Saharan Africa." A. Gaffney, J. Rudder, C. Clark, R. Plotnick, C. L. Anderson. EPAR Technical Report #245. (2014)

"Review of Monitoring, Learning and Evaluation Methodologies of Bill and Melinda Gates Foundation Sentinel Grants." C. L. Anderson, A. Gaffney, C. McKee, J. Rudder, E. Slakie, Z. True. EPAR Technical Report #253. (2013)

"Potential Environmental Implications of New Seed Varietals." C. L. Anderson, A. Cullen, J. Reed, J. Rudder. EPAR Technical Report #251. (2013)