Dr.phil., Technology University, 1982.
Research assistant University Frankfurt, 1970-1973. Demographer Federal Statistical Office, Wiesbaden, Germany, 1973-1980. Senior demographer Federal Institute for Population Research, 1980-1988, director, since 1988.
German representative United Nations CPD, New York City, since 1989, ICPD, Cairo, 1994, Council of Europe, Strasbourg, France, since 1989. Expert member Parliament Commission on Demographic Change, Bonn, 1992-1998.
Member International Union for Scientific Study of Population (council), European Association for Population Studies (council, president 1991-1995, honorary president since 1995).
1 child, Annette.