Offering savings products to smallholder farmers did not transform agricultural investment or output in six studies in sub-Saharan Africa. In a few cases, savings products sometimes benefited farmers by providing a form of risk protection and by helping them smooth consumption over time.

Improved access to markets has often helped small firms in low- and middle-income countries grow by boosting firm revenues and profits. These interventions have been effective because they have led to new sales, helped firms connect with new types of buyers, and increased information sharing and...

Reducing the costs and increasing the perceived benefits of education increase student participation for both boys and girls, and successful programs tend to help the gender with the lowest initial attendance most.

Public works programs in low- and middle-income countries provide short-term employment and earnings boosts to participants. These programs usually do not lead to lasting labor market benefits when measured several years after implementation, though they often generate lasting effects on asset...

When designed well, insurance does protect small-scale farmers from adverse weather events, but farmers have low demand for these products at market prices. New technologies and climate-smart agricultural practices can reduce farmers’ risk exposure and increase their climate resiliency. More...

Interventions that address perception gaps about the benefits of education or make the benefits more salient can increase student participation at low cost. In contrast, increases in the quality of education can be difficult for parents to accurately perceive and thus do not necessarily lead to...

Programs that reduce the costs of education increase student enrollment and attendance. However, there is considerable variation in the cost effectiveness of different programs.