Lundborg, Petter; Nilsson, Anton; Rooth, Dan-Olof - Institute for the Study of Labor (IZA) - 2011
A large number of studies in labor economics estimate the returns to schooling using data on monozygotic twins, under … questioned, however, but there is to date little evidence on the topic. Using a large dataset of twins, including comprehensive …. As a result, we find little evidence that early health differences between twins would bias the estimates of the returns …