1. Department of Life Course, Life Course Policy, and Social Integration/SOCIUM, University of Bremen , Mary-Somerville-Straße 9, 28359 Bremen , Germany
2. Free University & WZB Berlin Social Science Center, Research Unit “Skill Formation and Labor Markets” , Reichpietschufer 50, D-10785 Berlin , Germany
3. University of Mannheim, GESIS, Department “Monitoring Society and Social Change” , 68159 Mannheim , Germany