Farmers may grow crops for local consumption despite more profitable export options. DrumNet, a Kenyan NGO that helps small farmers adopt and market export crops, conducted a randomized trial to evaluate its impact. DrumNet services increased production of export crops and lowered marketing...

We review the theoretical and empirical literature on commitment devices.A commitment device is any arrangement, entered into by an individual, with the aim of making it easier to fulfill his or her own future plans. We argue that there is growing empirical evidence supporting the proposition...

Firms spend billions of dollars developing advertising content, yet there is little field evidence on how much or how it affects demand. We analyze a direct mail field experiment in South Africa implemented by a consumer lender that randomized advertising content, loan price, and loan offer...

Expanding access to commercial credit is a key ingredient of financial development strategies. There is less consensus on whether expanding access to consumer credit helps borrowers, particularly when loans are extended at high interest rates. Popular skepticism about "unproductive," "usurious"...

This paper builds a theory of trust based on informal contract enforcement in social networks. In our model, network connections between individuals can be used as social collateral to secure informal borrowing. We define network-based trust as the largest amount one agent can borrow from...

Farmers face a particular set of risks that complicate the decision to borrow. We use a randomized experiment to investigate (1) the role of crop-price risk in reducing demand for credit among famers and (2) how risk mitigation changes farmers’ investment decisions. In rural Ghana, we offer...

We measure the impact of a business training program for female microentrepreneur clients of a group banking program in Peru. Using the credit with education model, we assigned clients randomly to either treatment or control groups. Treatment groups received thirty to sixty minute...

This paper tests stylized facts and theories from behavioral economics and laboratory experiments using a randomized field experiment of our design. A major South African consumer credit lender issued 60,000 scripted direct mail solicitations where several marketing “treatments†were...

We designed a commitment savings product and implemented it using a randomized control experiment in the Philippines. This savings product was intended for individuals who want to commit now to save later, and who were sophisticated enough to engage in such a mechanism. Before offering the...

This paper estimates the prevalence of asymmetric information in a consumer credit market using a field experiment of our design. A major South African lender issued 60,000 direct mail offers where the interest rate was randomized along two different dimensions — an initial “offer...