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Evaluation
Commitment Savings Products in the Philippines
Researchers designed and implemented a commitment savings product called a SEED (Save, Earn, Enjoy Deposits) account, which restricted access to savings, thus potentially helping with either self-control or family-control issues. After one year, the commitment savings product led to increased savings and more decision making power in the household for women.
Evaluation
Finding Missing Markets: An Agricultural Brokerage Intervention in Kenya
Researchers evaluated whether a package of services, designed to help link smallholder farmers to commercial banks, retail farm suppliers, transportation services, and exporters, could help small farmers in Kenya adopt, finance, and market export crops, and thus make more income. One year after the program began, individuals who received the program were more likely to be growing an export crop, but incomes did not significantly improve.
Evaluation
Group Versus Individual Liability in the Philippines
In this study, researchers randomly selected existing group-lending centers to convert to an individual liability model. They found no difference in repayment rates between individuals assigned individual liability and those assigned group liability, no change in overall profitability for the bank, and a reduction in voluntary savings for those removed from joint liability.
Evaluation
Valuing Trust in Shantytowns in Peru
In collaboration with PRISMA, a Peruvian NGO offering credit through village banks, researchers designed and implemented a new loan product, which required new clients to be sponsored by existing clients, to measure the relative importance of social networks and prices for borrowing in shantytowns near Lima. Results demonstrated that borrowers were more likely to obtain sponsorship from friends. Non-friends were more likely to sponsor higher quality borrowers.
Evaluation
Primary School Deworming in Kenya
Researchers evaluated a mass school-based deworming program in Western Kenya, and found that deworming substantially improved health and school participation of treated children, as well as of untreated children in both treatment schools and neighboring schools. The program reduced school absenteeism by more than one-quarter, and was far cheaper than alternative ways of boosting school participation.
Evaluation
Balwadi Deworming in India
This study evaluated the impact of a preschool nutrition and health project that targeted anemia in the slums of Delhi, India on child health and school attendance. Results showed the program positively impacted weight-gain and school attendance, particularly for groups with high base-line rates of anemia.
Evaluation
Flipcharts, School Inputs, and Retrospective versus Prospective Analyses in Kenya
Researchers provided educational flipcharts to 89 randomly selected Kenyan primary schools and evaluated their impact on student learning, comparing retrospective and prospective estimates. In the prospective study, the estimated impact of flipcharts on student test scores was found to be close to zero. In contrast, the retrospective study seriously overestimated the impact of the intervention.
Person
Jonathan Zinman
Jonathan Zinman's research focuses on intertemporal choice and household finance. He works with policymakers and financial institutions around the globe to test economic theories of how firms and consumers interact in markets.
Evaluation
Vouchers for Private Schooling in Colombia
Colombia used lotteries to distribute vouchers which partially covered the cost of private secondary school for students who maintained satisfactory academic progress. Three years after the lotteries, winners were about 10 percentage points more likely to have finished 8th grade, primarily because they were less likely to repeat grades, and scored 0.2 standard deviations higher on achievement tests. In the long-run, the PACES program increased secondary school completion rates by 15 to 20 percent.
Evaluation
Peer Effects, Alcohol, and College Roommates in the United States
Researchers conducted a randomized evaluation to measure the impact of having a roommate who drank alcohol frequently before college on college students' grade point averages (GPAs). Results show that, while female students' GPAs were not affected by their roommate's drinking prior to college, male students' GPAs were significantly reduced by being assigned to a roommate who drank frequently before college.
Evaluation
Peer Effects, Diversity, and College Roommates in the United States
Researchers in the United States assessed the impact on college students of having a roommate from a different race. White students assigned to a black roommate were more likely to endorse affirmative action policies than those assigned to a white roommate. Other factors, such as having roommates from high-income or low-income backgrounds, also influenced students' behavior and attitudes towards social issues.
Evaluation
Teacher Incentives Based on Students' Test Scores in Kenya
In partnership with International Child Support, researchers designed and evaluated an incentives program that provided salary bonuses to teachers in Kenya based on the performance of their school as a whole on annual district exams. While results show that the incentives program led to an increase in student test scores, researchers believe that this increase was due to improved test-taking strategies and "cramming," rather than an increase in overall knowledge. The program did not have an impact on test scores in the long-run.
Evaluation
Textbooks and Test Scores in Kenya
Researchers evaluated the impact of a program that provided additional textbooks to primary schools in Kenya on students, teachers, and overall learning. This study found no evidence that textbook provision increased average test scores, or that it reduced either grade repetition or dropout rates.