NATIONAL BUREAU OF ECONOMIC RESEARCH
NATIONAL BUREAU OF ECONOMIC RESEARCH

NBER Publications by Julian C. Jamison

Contact and additional information for this authorAll NBER papers and publicationsNBER Working Papers only

Working Papers and Chapters

June 2015The Returns to Microenterprise Support Among the Ultra-Poor: A Field Experiment in Post-War Uganda
with Christopher Blattman, Eric P. Green, M. Christian Lehmann, Jeannie Annan: w21310
We show that extremely poor, war-affected women in northern Uganda have high returns to a package of $150 cash, five days of business skills training, and ongoing supervision. 16 months after grants, participants doubled their microenterprise ownership and incomes, mainly from petty trading. We also show these ultrapoor have too little social capital, but that group bonds, informal insurance, and cooperative activities could be induced and had positive returns. When the control group received cash and training 20 months later, we varied supervision, which represented half of the program costs. A year later, supervision increased business survival but not consumption.
May 2015Reducing Crime and Violence: Experimental Evidence on Adult Noncognitive Investments in Liberia
with Christopher Blattman, Margaret Sheridan: w21204
We show self control and self image are malleable in adults, and that investments in them reduce crime and violence. We recruited criminally-engaged Liberian men and randomized half to eight weeks of group cognitive behavioral therapy, teaching self control skills and a noncriminal self-image. We also randomized $200 grants. Cash raised incomes and reduced crime in the short-run but effects dissipated within a year. Therapy increased self control and noncriminal values, and acts of crime and violence fell 20--50%. Therapy's impacts lasted at least a year when followed by cash, likely because cash reinforced behavioral changes via prolonged practice.
May 2014Financial Education and Access to Savings Accounts: Complements or Substitutes? Evidence from Ugandan Youth Clubs
with Dean Karlan, Jonathan Zinman: w20135
Evidence on the effectiveness of financial education and formal savings account access is lacking, particularly for youth. We randomly assign 250 youth clubs to receive either financial education, access to a cheap group account, or both. The financial education treatments increase financial literacy; the account-only treatment does not. Administrative data shows the education plus account treatment increases bank savings relative to account-only. But survey-measured total savings shows roughly equal increases across all treatment arms. Earned income also increases in all treatment arms. We find little evidence that education and account access are strong complements, and some evidence they are substitutes.
June 2013Mixed Method Evaluation of a Passive mHealth Sexual Information Texting Service in Uganda
with Dean Karlan, Pia Raffler: w19107
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. Quantitative survey results allow us to reject the hypothesis that improving access to information would increase knowledge and shift behavior to less risky sexual activities. In fact, we find that the service led to an increase in promiscuity, and no ...

Contact and additional information for this authorAll NBER papers and publicationsNBER Working Papers only

 
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