This was a question posed by one of our readers in a comment on an earlier post I did on how to calculate the intra-class correlation in Stata.
David McKenzie's blog
· A new paper in Science looks at the impacts of China’s one-child policy on personality, finding people born after the introduction of the policy were, not only less trusting, less trustworthy, and more pessimistic, but also less competitive, less conscientious, and more risk-averse. See this coverage in the The Scientist.
· There is a promising sounding new blog about replication in Political Science. This week a post on how to get a masters degree for a replication discusses many of the things done to make a good replication.
· Call for Papers – 6th international conference on Migration and Development – to be held in Morocco May 18-19 – papers due end of January.
· GiveWell has a nuanced discussion of the evidence for giving cash directly to poor households and how this compares to deworming and ant-malaria bednets as interventions they recommend charitable donors should support.
Several countries around the world (notably Australia and Canada) have migration points systems- score above some points threshold and you can come in, score below and you can’t. This has intrigued me with the possibility of a regression-discontinuity design to measure impacts of migrating. However, there are several problems – the points given tend to be lumpy (e.g.
· Nice op-ed in the Washington Post by reporter Dylan Matthews calling for more testing of policy experiments
· Givewell’s blog has an extended discussion revisiting the case for economic benefits of deworming.
In clustered randomized experiments, random assignment occurs at the group level, with multiple units observed within each group. For example, education interventions might be assigned at the school level, with outcomes measured at the student level, or microfinance interventions might be assigned at the savings group level, with outcomes measured for individual clients.