Search our database of 1,200+ summaries of randomized evaluations conducted by our affiliates in 99 countries. To browse key policy recommendations from a subset of these evaluations, visit the Policy Publications tab above.

Displaying 153-160 of 257

The Impact of Risk Information on Adolescent Sexual Behavior and Knowledge in Cameroon

In Cameroon, researchers evaluated the impact of various HIV prevention interventions delivered through schools on girls and young women’s exposure to risk. The interventions decreased the incidence of pregnancy (a marker for unprotected sex) in the following nine to twelve months by over 25 percent...

Contraceptive Adoption, Fertility, and the Family in Zambia

Researchers used an evaluation that varied whether women were given access to contraceptives alone or with their husbands to examine the effect of male involvement in family planning on fertility outcomes. Women who received private access to vouchers for contraceptives were more likely to take up...

The Role of Incentives in the Distribution of Public Goods in Zambia

In Lusaka, Zambia, researchers compared the effect of financial and non-financial reward schemes on sales of female condoms. They found that non-financial incentives were more effective than financial rewards at motivating hair stylists to sell female condoms to their customers.

Free Distribution or Cost Sharing? Evidence from a Malaria Prevention Experiment in Kenya

Researchers investigated the impact of the price of insecticide-treated bed nets (ITNs) on usage and demand in Kenya. Researchers found that cost-sharing considerably dampened demand, and those who were left out under a cost-sharing scheme had very high usage rates when they could access the product...

Circumcision, Information, and HIV Prevention in Malawi

Researchers evaluated an information campaign in rural Malawi to examine the impact of providing information about voluntary medical male circumcision and HIV transmission risk on beliefs and sexual behavior. The program reduced risky sexual behavior among uncircumcised men, but did not increase...

The Impact of Cognitive Behavioral Therapy on Low-Income Individuals in Rural Ghana

Nathan Barker
Angela Ofori-Atta
Researchers worked with Innovations for Poverty Action and the University of Ghana Medical School to design, implement, and conduct a randomized evaluation of the impacts of a group CBT curriculum on low-income individuals in rural Ghana. CBT improved participants’ mental and physical well-being...

Peer Effects, Diversity, and College Roommates in the United States

Johanne Boisjoly
Jacque Eccles
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...

Empowering Citizens through Community-Based Development Empower Citizens in Ghana

Researchers conducted a randomized evaluation to test the impact of community-based development on political participation, public goods provision, and individual well-being in Ghana. They found that, although the community engagement program led to changes in local leadership, it was not an...