Baumert, Jürgen Max Planck Institute for Human Development, Max Planck Society;
Nagy, Gabriel Max Planck Institute for Human Development, Max Planck Society;
Baumert, J., Nagy, G., & Lehmann, R. (2012). Cumulative advantages and the emergence of social and ethnic inequality: Matthew effects in reading and mathematics development within elementary schools? Child Development, 83(4), 1347-1367. doi:10.1111/j.1467-8624.2012.01779.x.