· Chris Blattman  on a new paper by David Card, Stefano DellaVigna, and Ulrike Malmendier on how many experiments are getting published in top economics journals, and on the role of theory in these.
· Justin Sandefur at the CGD blog  on what has happened to deworming programs in Kenya.
· Banerjee and Duflo in Foreign Policy magazine  on whether there are really more than 1 billion hungry people in the world
· A summary in Science  of new research which shows that paying incentives has a 0.64 standard deviation average effect on IQ scores, and points out that the correlations we observe between ability measures and outcomes when ability is measured in low-stakes settings (like surveys) may pick up motivation as much as ability. (HT Marginal Revolution ).