The paper shows that self-control, time preferences, and values are malleable in adults, and that investments in these skills and preferences reduce crime and violence. The authors recruited criminally-engaged Liberian men and randomized half to eight weeks of group cognitive behavioral therapy,...

The WHO has recently debated whether to reaffirm its long-standing recommendation of mass drug administration (MDA) in areas with more than 20 percent prevalence of soil-transmitted helminths (hookworm, whipworm, and roundworm). There is consensus that the relevant deworming drugs are safe and...

The authors report results from a randomized evaluation of a merit scholarship program for adolescent girls in Kenya. Girls who scored well on academic exams received a cash grant and had school fees paid. Girls eligible for the scholarship showed significant gains in academic examination scores...

This paper presents descriptive statistics from the first wave of the Syrian Refugee Life Study (S-RLS), which was launched in 2020. S-RLS is a longitudinal study that tracks a representative sample of 2,500 registered Syrian refugee households in Jordan. It collects comprehensive data on...