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Begin New Search Author Dean Karlan Publication Year within 25 Years

11. Observing Unobservables: Identifying Information Asymmetries with a Consumer Credit Field Experiment

Author:
Dean Karlan and Jonathan Zinman
Publication Date:
01-2007
Content Type:
Working Paper
Institution:
Center for Global Development
Abstract:
Information asymmetries are important in theory but difficult to identify in practice. We estimate the presence and importance of adverse selection and moral hazard in a consumer credit market using a new field experiment methodology. We randomized 58,000 direct mail offers issued by a major South African lender along three dimensions: 1) an initial "offer interest rate" featured on a direct mail solicitation; 2) a "contract interest rate" that was revealed only after a borrower agreed to the initial offer rate; and 3) a dynamic repayment incentive that extended preferential pricing on future loans to borrowers who remained in good standing. These three randomizations, combined with complete knowledge of the Lender's information set, permit identification of specific types of private information problems. Our setup distinguishes adverse selection from moral hazard effects on repayment, and thereby generates unique evidence on the existence and magnitudes of specific credit market frictions. We find evidence of moral hazard and weaker evidence for adverse selection. A rough calibration suggests that perhaps 7% to 16% of default is due to asymmetric information problems. Asymmetric information may help explain the prevalence of credit constraints even in a market that specializes in financing high-risk borrowers at very high rates.
Topic:
Civil Society, Development, Markets, and Poverty
Political Geography:
South Africa

12. Expanding Credit Access: Using Randomized Supply Decisions to Estimate the Impacts

Author:
Dean Karlan and Jonathan Zinman
Publication Date:
01-2007
Content Type:
Working Paper
Institution:
Center for Global Development
Abstract:
Expanding credit access is a key ingredient of development strategies worldwide. Microfinance practitioners, policymakers, and donors have ambitious goals for expanding access, and seek efficient methods for implementing and evaluating expansion. There is less consensus on the role of consumer credit in expansion initiatives. Some microfinance institutions are moving beyond entrepreneurial credit and offering consumer loans. But many practitioners and policymakers are skeptical about “unproductive” lending. These concerns are fueled by academic work highlighting behavioral biases that may induce consumers to overborrow. We estimate the impacts of a consumer credit supply expansion using a field experiment and follow-up data collection. A South African lender relaxed its risk assessment criteria by encouraging its loan officers to approve randomly selected marginal rejected applications. We estimate the resulting impacts using new survey data on borrower behavior and well-being, and administrative data on loan repayment. We find that the marginal loans increased credit access and produced measurable benefits in the form of increased employment, reduced hunger, and reduced poverty. The marginal loans also appear to have been profitable for the lender. The results must be interpreted with caution but suggest that consumer credit expansions can be welfare-improving.
Topic:
Development, Markets, and Poverty
Political Geography:
Africa and South Africa

13. Teaching Entrepreneurship: Impact of Business Training on Microfinance Clients and Institutions

Author:
Dean Karlan and Martin Valdivia
Publication Date:
01-2007
Content Type:
Working Paper
Institution:
Center for Global Development
Abstract:
Can one teach basic entrepreneurship skills, or are they fixed personal characteristics? Most academic and development policy discussions about microentrepreneurs focus on their access to credit, and assume their human capital to be fixed. The self-employed poor rarely have any formal training in business skills. However, a growing number of microfinance organizations are attempting to build the human capital of micro-entrepreneurs in order to improve the livelihood of their clients and help further their mission of poverty alleviation. Using a randomized control trial, we measure the marginal impact of adding business training to a Peruvian group lending program for female microentrepreneurs. Treatment groups received thirty to sixty minute entrepreneurship training sessions during their normal weekly or monthly banking meeting over a period of one to two years. Control groups remained as they were before, meeting at the same frequency but solely for making loan and savings payments. We find that the treatment led to improved business knowledge, practices and revenues. The program also improved repayment and client retention rates for the microfinance institution. Larger effects found for those that expressed less interest in training in a baseline survey. This has important implications for implementing similar market-based interventions with a goal of recovering costs.
Topic:
Development, Economics, Education, and Gender Issues

14. Female Empowerment: Impact of a Commitment Savings Product in the Philippines

Author:
Dean Karlan, Wesley Yin, and Nava Ashraf
Publication Date:
01-2007
Content Type:
Working Paper
Institution:
Center for Global Development
Abstract:
Female “empowerment” has increasingly become a policy goal, both as an end to itself and as a means to achieving other development goals. Microfinance in particular has often been argued, but not without controversy, to be a tool for empowering women. Here, using a randomized controlled trial, we examine whether access to an individually-held commitment savings product leads to an increase in female decision-making power within the household. We find positive impacts, particularly for women who have below median decision-making power in the baseline, and we find this leads to a shift towards female-oriented durables goods purchased in the household.
Topic:
Development, Economics, and Gender Issues
Political Geography:
Southeast Asia