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Expertise
Microfinance, Health, Political Economy
Bio
Dean Karlan is a non-resident fellow at the Center for Global Development and a Professor of Economics at Yale University. Karlan is also President of Innovations for Poverty Action (IPA), co-director of the Financial Access Initiative, a consortium created with funding from the Bill and Melinda Gates Foundation, a research fellow of the M.I.T. Jameel Poverty Action Lab, and co-Founder and President of StickK.com. In 2007, he received a Presidential Early Career Award for Scientists and Engineers and in 2008 a Alfred P. Sloan Research Fellowship. His research focuses on microeconomic issues of financial decision-making, specifically employing experimental methodologies to examine what works, what does not, and why in interventions in microfinance and health. Internationally, he focuses on microfinance, and domestically, he focuses on voting, charitable giving, and commitment contracts. In microfinance, he has studied interest rate policy, credit evaluation and scoring policies, entrepreneurship training, group versus individual liability, savings product design, credit with education, and impact from increased access to credit.
His work on savings and health typically uses insights from psychology and behavioral economics to design and test specialized products. He has consulted for the World Bank, the Asian Development Bank, FINCA International and the Guatemalan government. Karlan received a Ph.D.
in Economics from M.I.T., an M.B.A. and an M.P.P. from the University of Chicago, and a B.A. in International Affairs from the University of Virginia.
Media Contact
Eva Grant
egrant@cgdev.org
In the News
More From Dean Karlan
We study the impact of a multi-faceted social protection program, often referred to as a “graduation” model program, in Yemen during a period of civil unrest. After four years we find positive impacts on asset accumulation and savings behavior, albeit substantially less than the amount the household originally received.
We experimentally test the impact of expanding access to basic bank accounts in Uganda, Malawi, and Chile. Over two years, 17 percent, 10 percent, and 3 percent of treatment individuals made five or more deposits, respectively. Average monthly deposits for them were at the 79th, 91st, and 96th percentiles of baseline savings. Survey data show no clearly discernible intention-to-treat effects on savings or any downstream outcomes. This suggests that policies merely focused on expanding access to basic accounts are unlikely to improve welfare noticeably since impacts, even if present, are likely small and diverse.
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.
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.

The poor can and do save, but often use formal or informal instruments that have high risk, high cost, and limited functionality. This could lead to undersaving compared to a world without market or behavioral frictions.
We evaluate the impact of a health information intervention implemented through mobile phones, using a clustered randomized control trial augmented by qualitative interviews. The intervention aimed to improve sexual health knowledge and shift individuals towards safer sexual behavior by providing reliable information about sexual health. The novel technology designed by Google and Grameen Technology Center provided automated searches of an advice database on topics requested by users via SMS. It was offered by MTN Uganda at no cost to users.
Theory and evidence have raised concerns that microcredit does more harm than good, particularly when offered at high interest rates. We use a clustered randomized trial, and household surveys of eligible borrowers and their businesses, to estimate impacts from an expansion of group lending at 110% APR by the largest microlender in Mexico.
Pages
This paper details that results of an experiment in northern Ghana in which small-scale farmers were randomly given different kinds of potentially risk-reducing assistance.
How do entrepreneurs learn whether they have what it takes to manage larger businesses? It's likely through experimentation. In this paper, Dean Karlan, Ryan Knight, and Christopher Udry develop a model to help understand the impediments to experimentation and the benefits to giving it a try.
The poor can and do save, but often use formal or informal instruments that have high risk, high cost, and limited functionality. This could lead to undersaving compared to a world without market or behavioral frictions.
The reasons why people give to charities vary from individual to individual, but it is clear that large, public gifts to a charity from well-known donors increase the number and size of smaller individual gifts. In this working paper, Dean Karlan and John A. List show that the effect has to do with overcoming the asymmetry of knowledge about the quality of the charity.
Microfinance is often viewed as a tool for empowering women. However, it is not clear that increasing a woman's share of household income also improves her status within the household. In this working paper, CGD non-resident fellow Dean Karlan and his co-authors examine whether access to individually held savings accounts leads to an increase in female decision-making power within the household. They find positive impacts, particularly for women who start with below-average decision-making power; there is a shift towards the purchase of female-oriented durables in the household. This paper is one in a series of six CGD working papers by Dean Karlan on various aspects of microfinance (Working Paper Nos. 106–111).
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.
Pages
We study the impact of a multi-faceted social protection program, often referred to as a “graduation” model program, in Yemen during a period of civil unrest. After four years we find positive impacts on asset accumulation and savings behavior, albeit substantially less than the amount the household originally received.
We experimentally test the impact of expanding access to basic bank accounts in Uganda, Malawi, and Chile. Over two years, 17 percent, 10 percent, and 3 percent of treatment individuals made five or more deposits, respectively. Average monthly deposits for them were at the 79th, 91st, and 96th percentiles of baseline savings. Survey data show no clearly discernible intention-to-treat effects on savings or any downstream outcomes. This suggests that policies merely focused on expanding access to basic accounts are unlikely to improve welfare noticeably since impacts, even if present, are likely small and diverse.
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.
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.
The poor can and do save, but often use formal or informal instruments that have high risk, high cost, and limited functionality. This could lead to undersaving compared to a world without market or behavioral frictions.
We evaluate the impact of a health information intervention implemented through mobile phones, using a clustered randomized control trial augmented by qualitative interviews. The intervention aimed to improve sexual health knowledge and shift individuals towards safer sexual behavior by providing reliable information about sexual health. The novel technology designed by Google and Grameen Technology Center provided automated searches of an advice database on topics requested by users via SMS. It was offered by MTN Uganda at no cost to users.
Theory and evidence have raised concerns that microcredit does more harm than good, particularly when offered at high interest rates. We use a clustered randomized trial, and household surveys of eligible borrowers and their businesses, to estimate impacts from an expansion of group lending at 110% APR by the largest microlender in Mexico.
How do entrepreneurs learn whether they have what it takes to manage larger businesses? It's likely through experimentation. In this paper, Dean Karlan, Ryan Knight, and Christopher Udry develop a model to help understand the impediments to experimentation and the benefits to giving it a try.
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