Causal Inference Should Focus More on Mechanism Than Method

[From a post by Andrew Gelman at his blog, Statistical Modeling, Causal Inference, and Social Science] “If researchers and policy makers continue to view results of impact evaluations as a black box and fail to focus on mechanisms, the movement…

Read More

A Pop Quiz on Significant Effects with Small Sample Sizes

QUICK: Does finding a significant effect when the sample size is small make it more likely that the effects are real and important?  Or less? James Heckman, Nobel Prize winning economist, says more: “Also holding back progress are those who…

Read More