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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 12 weeks, visualization increased objectively measured chlorination; it also reduced diarrhea episodes among children and...

Researchers partnered with the consulting firm Ernst & Young to test whether providing tailors in Accra with individualized consulting, a sizable cash grant, or both can facilitate growth. Initially, tailors experimented with investments and management practices, but most learned overtime that these...

In this randomized evaluation in Zimbabwe, researchers studied how social media messages targeting misinformation can affect people’s beliefs about and responses toward Covid-19. The study found that these messages increased participants’ knowledge of Covid-19 information by 7 percentage points and...