Attrition is a bugbear for most impact evaluations, and can cause even the best designed experiments to be subject to potential bias. In a new paper, Luc Behaghel, Bruno Crépon, Marc Gurgand and Thomas Le Barbanchon describe a clever new way to deal with this problem using information on the number of attempts it takes to get someone to respond to a survey.
David McKenzie's blog
· In Science this week (gated), Katz and Kling add some co-authors and follow-up on their famous Econometrica paper on the Moving to Opportunity program to examine impacts 10-15 years after moving from a high-poverty to a low-poverty neighborhood.
· Essential reading this week: The Boston Review has an excellent feature on early interventions to promote social mobility, with the lead article by Jim Heckman. I never realized quite how small the samples of the famous early childhood studies are – treatment group of 58 kids in the Perry Preschool program and 65 in the control group.
At the end of August I gave several presentations at the IPA Impact and Policy Conference in Bangkok, which had days on SME development, Governance and Post-Conflict recovery, and Financial Inclusion. The agenda is here. There was a good mix of new results from studies that don’t get have papers, along with more polished work on the conference topics.
· Essential reading or viewing – take your pick – the Nobel Symposium on Growth and Development was held this week and has the content online. However, once again migration is overlooked in the keys to development discussion.
· Has deworming been way overstated as a development intervention?
In a recent post, I described a randomized experiment in Jordan that I (along with Matt Groh, Nandini Krishnan and Tara Vishwanath) have been working on.
The Yale Savings and Payments Research Fund (YASPR), under the Global Financial Inclusion Initiative at Innovations for Poverty Action (IPA), is planning a training event for PhD (and PhD-track) researchers who are interested in conducting randomized control trials (RCTs) on micro-savings and payments.