Detailed data on the process of social integration of young adults within the crucially important life domains of living arrangements and family formation on the one hand and education and occupation on the other hand. Education and training / occupational careers / income and savings / family business / dating / relationship history / marriage and cohabitation / housing careers / fertility history / investments in children / cohabitation contracts / prenuptial agreement / wills and life insurance / relationship quality / money management / leisure / contacts with parents and inlaws / family background / social networks / health / family attitudes / religion / social psychological tests scales and experiments Background variables: basic characteristics/ residence/ household characteristics/ characteristics of parental family/household/ occupation/employment/ income/capital assets/ education/ politics/ religion/ consumption of durables/ readership, mass media, and 'cultural' exposure. Fieldwork years: 1987 (wave 1), 1989 (wave 2), 1991 (wave 3), 1995 (wave 4).