1982

Survey among a random sample of 750 inhabitants of the Netherlands ascertaining judgements of occupational titles and determining occupational careers; interviews (with H. Sixma)

                        1990

Survey among a random sample of all members of 2000 households in the Netherlands ascertaining educational, occupational and housing careers and developments in family relationships; respondents answer questionnaires on a computer installed in their home (with W. Saris, J. Dronkers, J. van Doorne-Huiskes and J. van Hoof)

                        1992

Retrospective survey among a random sample of 1000 inhabitants of the Netherlands, plus follow up surveys among their spouse (if present), their parents (if still alive) and a sibling (if present); interviews and questionnaires for respondents and spouses; mail questionnaires for parents and siblings (with H. Ganzeboom), emphasis on inequality questions

                        1998

Retrospective survey among a random sample of 1000 inhabitants of the Netherlands, plus follow up surveys among their spouse (if present), their parents (if still alive) and a sibling (if present); interviews and questionnaires for respondents and spouses; mail questionnaires for parents and siblings (with P. de Graaf), emphasis on cohesian questions

                        2000

Retrospective survey among a random sample of 1000 inhabitants of the Netherlands, plus follow up surveys among their spouse (if present), their parents (if still alive) and a sibling (if present); interviews and questionnaires for respondents and spouses; mail questionnaires for parents and siblings (with N.D. de Graaf), emphasis on rationalization questions