so is anyone ever going to tell Card (or anyone at nber) that you can't use adjacent geographic units as controls because they are not independent? www.nber.org/papers/w32496
Founded in 1920, the NBER is a private, non-profit, non-partisan organization dedicated to conducting economic research and to disseminating research findings among academics, public policy makers, an...
spatial econometricians have used the original Card & Kreuger paper for more than 20 years as the classic example of how NOT to setup that model, because spillovers onlinelibrary.wiley.com/doi/10.1111/... ...though of course now I can only seem to find the Lacombe paper
A popular approach to examining the effects of public policy has been to rely on a spatial data sample of border counties as in Holmes (1998)—border counties from a sample of states that are used in ....