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Begin New Search Political Geography Africa Author Dean Karlan

1. To Charge or Not to Charge: Evidence from a Health Products Experiment in Uganda

Author:
Dean Karlan, Pia Raffler, Greg Fischer, and Margaret McConnell
Publication Date:
11-2014
Content Type:
Working Paper
Institution:
Center for Global Development
Abstract:
In a field experiment in Uganda, we find that demand after a free distribution of three health products is lower than after a sale distribution. This contrasts with work on insecticide-treated bed nets, highlighting the importance of product characteristics in determining pricing policy. We put forward a model to illustrate the potential tension between two important factors, learning and anchoring, and then test this model with three products selected specifically for their variation in the scope for learning. We find the rank order of shifts in demand matches with the theoretical prediction, although the differences are not statistically significant.
Topic:
Development and Health
Political Geography:
Uganda and Africa

2. Self-Selection into Credit Markets: Evidence from Agriculture in Mali

Author:
Dean Karlan, Bram Thuysbaert, Christopher Udry, and Lori Beaman
Publication Date:
09-2014
Content Type:
Working Paper
Institution:
Center for Global Development
Abstract:
We partnered with a micro-lender in Mali to randomize credit offers at the village level. Then, in no-loan control villages, we gave cash grants to randomly selected households. These grants led to higher agricultural investments and profits, thus showing that liquidity constraints bind with respect to agricultural investment. In loan-villages, we gave grants to a random subset of farmers who (endogenously) did not borrow. These farmers have lower – in fact zero – marginal returns to the grants. Thus we find important heterogeneity in returns to investment and strong evidence that farmers with higher marginal returns to investment self-select into lending programs.
Topic:
Agriculture and Economics
Political Geography:
Africa

3. Hoping to Win, Expected to Lose: Theory and Lessons on Microenterprise Development

Author:
Dean Karlan, Ryan Knight, and Christopher Udry
Publication Date:
11-2012
Content Type:
Working Paper
Institution:
Center for Global Development
Abstract:
We show how financial and managerial constraints impede experimentation and thus limit learning about the profitability of investments. Imperfect information about one's own type, but willingness to experiment to learn one's type, leads to short-run negative expected returns to investments, with some outliers succeeding. We find in an experiment that entrepreneurs invest randomized grants of cash and adopt advice from randomized grants of consulting services, but both lead to lower profits on average. In the long run, they revert back to their prior scale of operations. In a meta-analysis, results from 19 other experiments find mixed support for this theory.
Topic:
Development, Economics, Markets, Foreign Aid, and Foreign Direct Investment
Political Geography:
Africa

4. Credit Elasticities in Less-Developed Economies: Implications for Microcredit

Author:
Dean Karlan and Jonathan Zinman
Publication Date:
01-2007
Content Type:
Working Paper
Institution:
Center for Global Development
Abstract:
Policymakers often prescribe that microfinance institutions increase interest rates to eliminate reliance on subsidies. This strategy makes sense if the poor are rate insensitive: then microlenders increase profitability (or achieve sustainability) without reducing the poor's access to credit. We test the assumption of price inelastic demand using randomized trials conducted by a consumer lender in South Africa. The demand curves are downward-sloping, and steep for price increases relative to the lender's standard rates. We also find that loan size is far more responsive to changes in loan maturity than to changes in interest rates, which is consistent with binding liquidity constraints.
Topic:
Development, Economics, and Markets
Political Geography:
Africa and South Africa

5. 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