Several recent studies based on 'exogenous' sources of variation in education outcomes show Instrumental Variables (IV) estimates of returns to schooling that are substantially higher than the corresponding Ordinary Least Squares (OLS) estimates. Card (1995a) suggests that these results can be...

An important component of the long-run cost of a war is the loss of human capital, suffered by children of schooling age who receive less education because of the war. This paper shows that in the European countries involved in World War II, children who were ten years old during the conflict...