War and collective action in Sierra Leone: A comment on the use of coefficient stability
Felipe González; Edward Miguel
Journal of Public Economics, August 2015. Volume 128, Pages 30-33
Abstract: In a study of the effect of civil war exposure on local collective action outcomes in Sierra Leone, Bellows and Miguel (2009) employ a coefficient stability approach to assess the importance of omitted variable bias building on Altonji et al. (2005a). Here we clarify the econometric assumptions underlying Bellows and Miguel (2009), and extend their analysis using data on dependent variable reliability ratios and the method developed in Oster (2015).