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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 effect of personalized options information on seniors' plan choices. They found that people who received personalized information were more likely to change plans, resulting in an average saving of US$100 per year. This suggests that direct information delivery can decrease...

Researchers evaluated an information campaign in rural Malawi to examine the impact of providing information about voluntary medical male circumcision and HIV transmission risk on beliefs and sexual behavior. The program reduced risky sexual behavior among uncircumcised men, but did not increase...

In Bihar, India, researchers examined how double fortified salt could be most effectively priced, marketed, and distributed in order to have the greatest impact on a range of health, education, and economic outcomes.

Researchers introduced a mobile phone-based agricultural extension service to evaluate its impact on knowledge and adoption of effective farming methods among cotton farmers in Gujarat, India. They found that the service was highly effective in nudging farmers to adopt a number of recommended...

In Peru, researchers evaluated the impact of a tailored inquiry- and problem-based learning approach on preschoolers’ performance in math. The program improved overall mathematics outcomes, which persisted for some content areas even one year after the program ended.

To study the effect of increased social pressure on turnout, researchers sent households one of four randomly selected mailings eleven days before Michigan’s August 2006 primary election. All four mailings increased turnout, but informing households of their neighbors’ past voting records raised...