· On the FAI blog, Jonathan Morduch discusses what’s next in microfinance , in terms of how experiments can move towards allowing greater external validity.
· A claim that volunteers for lab experiments are really not that different  in how they play dictator, ultimatum and trust games from a representative sample of a city’s population..”the convenient sample of self-selected college students that allowed a boom in human experimentation in both social and natural sciences produces qualitatively and quantitatively accurate results” - based on a study in Spain.
· Obama for America’s chief scientist describes how they used experiments  to figure out how many emails to send asking for donations, and who they should be from, in the Tartan: “You couldn’t just say that it’s going to work, so go ahead and do it. We had to almost prove everything using randomized experiments”
· Five common myths on pre-K evidence  in Education week – discussion of how a mix of experimental and quasi-experimental evidence give more support for pre-K effects and help overcome the critique that the experimental evidence is just from a couple of very small samples. And if you missed it, see Markus’s discussion this week of evidence for the benefits of daycare  in developing countries.
· Just as we were starting to think behavioral economics was solving the retirement savings puzzle through opt-in defaults into employer programs, two recent reasons to be concerned: the Squared Away blog reports on research that shows employers appear to respond to auto-enrolment by lowering their match contribution ; and this NY Times piece noting that most plans auto-default workers to saving too little .
You can tweet me any other interesting links you come across (@dmckenzie001 ).
- links