Biographical Sketch Nan Dirk de Graaf joined Nuffield College in 2007. He obtained his PhD at Utrecht University (1988) and was a post-doc researcher at the Max Planck Institute for Education and Human Development in Berlin (1988-1989). He was a research fellow of the Royal Netherlands Academy (1990-1995) and a full Professor in Sociology (also the chair of the Department) at Nijmegen University (2001-2007) and the chair of the Reseach School ICS (2003-2007).

• Acknowledgement, Contents, 1 Introduction, 2 Documentation of the variables, References, Appendices

Biographical Sketch Nan Dirk de Graaf joined Nuffield College in 2007. He obtained his PhD at Utrecht University (1988) and was a post-doc researcher at the Max Planck Institute for Education and Human Development in Berlin (1988-1989). He was a research fellow of the Royal Netherlands Academy (1990-1995) and a full Professor in Sociology (also the chair of the Department) at Nijmegen University (2001-2007) and the chair of the Reseach School ICS (2003-2007).

• Acknowledgement, Contents, 1 Introduction, 2 Documentation of the variables, References, Appendices

Biographical Sketch Nan Dirk de Graaf joined Nuffield College in 2007. He obtained his PhD at Utrecht University (1988) and was a post-doc researcher at the Max Planck Institute for Education and Human Development in Berlin (1988-1989). He was a research fellow of the Royal Netherlands Academy (1990-1995) and a full Professor in Sociology (also the chair of the Department) at Nijmegen University (2001-2007) and the chair of the Reseach School ICS (2003-2007).

• Acknowledgement, Contents, 1 Introduction, 2 Documentation of the variables, References, Appendices