Explore by type of impact

Research evidence can influence policy and programme decisions in several ways. 3ie has identified seven types of evidence use and impact. Click on the buttons below to see all the summaries that relate to each type. For more information, read how 3ie classifies and verifies evidence impact.

Newest evidence impact summaries

Improving programming to encourage voluntary medical male circumcision in Tanzania

Evidence impact summary

Evidence from a 3ie-supported study prompted Jhpiego and AIDSFree to alter the design of a subsequent intervention encouraging voluntary medical male circumcision. 

Strengthening World Food Programme’s measures to address malnutrition in Sudan

Evidence impact summary

Evaluation findings prompted the World Food Programme to revise their volunteer and staff training components, improve their programme monitoring and enhance mass media engagement on their interventions. 

Study findings shape agricultural extension guidelines in Uganda

Evidence impact summary

Findings from a 3ie study prompted Uganda's Ministry of Agriculture, Animal Husbandry and Fisheries to recommend and integrate farmer-to-farmer training in its Agriculture Extension Guidelines and Standards.

Pakistan commissions research to evaluate linkages between urban services and tax collection

Evidence impact summary

Evaluation findings led the Punjab government to commission two impact evaluations to address short- and long-term policy priorities and build an evidence base on issues around public financial management and governance.

Influencing the design of the World Bank’s smallholder farmer irrigation project in Rwanda

Evidence impact summary

The World Bank designed its Sustainable Agricultural Intensification and Food Security Project in Rwanda based in part on findings from a 3ie-supported evaluation on the impacts of hillside irrigation on smallholder welfare.