well as academic achievement. Our data are taken from the Mannheim Study of Children at Risk (MARS), an epidemiological …

psychometric measures from a longitudinal cohort study of children in the Rhine-Neckar region in central Germany. In children with … dimensions: These children are more persistent and less often hyperactive. The findings are robust if we control for the … comparing the children at age eight and age eleven, after the children have entered Germany's segregated secondary-school tracks …