Evaluations

Researchers in Ghana are attempting to measure households' demand for simple ceramic water filters by offering the filter at different price levels through door-to-door sales. They will also explore whether different household characteristics, such as education, income, and health, affect a...

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...

Researchers tested whether an informative letter campaign could reduce inappropriate prescribing of controlled substances in Medicare Part D. Letters had no detectable effect on prescribing. In ongoing work, researchers are testing alternative versions of letters.

In partnership with the Government of Tamil Nadu, researchers evaluated the impact of incentivizing and monitoring walking on exercise and health. Incentives increased walking and improved health, as measured by risk factors for diabetes and by mental health.

Researchers tested whether sharing messages that appealed to negative emotions, like shame or disgust, increased households’ hand-washing behavior and willingness to pay for water chlorination in Dhaka, Bangladesh. Negative messaging had no impact on chlorination levels or willingness to pay, but...

Researchers are studying the impact of a clinical decision support system on the ordering of high-cost scans.

Researchers evaluated two approaches to improving the quality of Colombian preschools. Providing additional resources to preschools for materials and new staff did not benefit children’s development and, unintentionally, led teachers to reduce their involvement in classroom activities. However, the...