Evaluations

Researchers conducted three randomized evaluations to measure the degree of competition among wholesale maize traders, understand the implications for social welfare, and test whether new traders could make a market more competitive. Researchers found that traders did not pass through much of a...

By running a Facebook public health campaign, researchers found that social media messaging from doctors and nurses reduced holiday travel and subsequent Covid-19 infection rates. This suggests that social media campaigns may be an impactful and cost-effective way to slow the spread of Covid-19 and...

Researchers conducted a randomized evaluation to test the impact of employment on refugee psychosocial well-being in Bangladesh. The study found that employment generated significant psychosocial value beyond that from cash transfers alone.

It is unclear whether a gender-differentiated intervention may be more effective in reducing some or all types of crime. To better understand this issue, researchers are working with the local police force in two districts in Pakistan to study its effects on trust levels and occurrence of crime.

Researchers studied the impact of the gender of communicators on the effects of a program to train farmers to communicate information on agricultural technology to other farmers. While there was no gender gap in communicators’ ability to acquire, retain, and use the information about the technology...

Researchers partnered with the two major political parties in Sierra Leone and conducted a randomized evaluation to test the impact of providing reliable information on potential candidates’ qualifications and sharing voter preferences with party officials during Parliamentary elections. More...

In western Uganda, researchers conducted a series of randomized evaluations that assessed the impact of introducing a combination of post-harvest services, training on agricultural best practices, and access to a market for high-quality maize on farmers’ productivity and profits. Researchers found...

Researchers evaluated the impact of light-touch psychological interventions on health and economic outcomes, with a particular focus on the chlorination of drinking water. After twelve weeks, visualizing the future increased objectively measured chlorination; it also reduced diarrhea episodes among...