Kerry, thanks very much for that post. I recently discovered the work of Esther Duflo and Abhijit Banerjee (the authors of the article you posted). From the Center for Global Development website (
http://www.cgdev.org/content/article/detail/1424970): "Duflo is professor of poverty alleviation and development economics at the Massachusetts Institute of Technology and co-founder [with Banerjee] of the Abdul Latif Jameel Poverty Action Lab (J-PAL). She is best known for her work
applying randomized controlled trials and other forms of impact evaluation in field experiments to identify which development interventions actually work."The webpage whose url I wrote, above, includes a video of a 15-minute talk by Esther Duflo about using randomized controlled trials to guide policy choices, in trying to aid poor people. I think it is well worth the time to listen.
(I read an article by an economist not long ago, that applied a randomized controlled trial to microfinance, in Sri Lanka. I've been meaning to summarize it for this forum for a few weeks, but can't seem to set aside the time for it. You reminded me to put this back on my to-do list.)