How to design a survey for estimating returns to education? Do returns to education depend on how and who you ask? Yes. Turns out short questionnaires do lead to biased estimates of returns to education. Even thought who responds ,self or proxy, did not make significant difference, the level of biased estimates differed between education level.
Experiments on TOMS shoes. It doesn’t affect local shoes market negatively but it doesn’t seem to have much impact on poor children either. Important thing is, TOMS wanted the results to be published.