Nathalie Bajos is a social demographer with a PhD in public health. After having carried out several research projects on medical emergency services and occupational diseases, she is currently a researcher in public health at the National Institute of Health and Medical Research (Institut National de la Santé et de la Recherche Médicale—INSERM) in Paris, where she was one of the principal coordinators of the national survey on sexual behaviour in France (the ACSF-survey). She is the author or co-author of a lot of publications resulting from this survey, among which Sexual Behaviour and AIDS (edited with Alfred Spira and the ACSF Group, Aldershot, Avebury, 1994) and La sexualité aux temps du sida (edited with Michel Bozon, Alexis Ferrand, Alain Giami and Alfred Spira, Paris, Presses Universitaires de France, 1998). She is currently engaged in an evaluation of the enforcement of the abortion law in France.
Nathalie Beltzer, PhD in economics, is a researcher at the National Institute of Health and Medical Research (INSERM) in Paris. Her current work focuses on decision models such as the Production Function Model or the Expected Utility Theory applied to risk perception, individual management of the HIV risk, and the individual choice of preventive strategies. She has worked on the national survey on sexual behaviour in France (ACSF, 1992), and since 1990 belongs to the KABP team.
Henny Bos was until December 1997 a research assistant at the Department of Gay and Lesbian Studies at Utrecht University, predominantly focusing on gay and lesbian health issues. Nowadays she works at the Netherlands Institute of Social Sexual Research (NISSO), doing a study about homosexuality in the workplace.
Michel Bozon is a sociologist and Director of Research at the National Institute for Population Studies (Institut National d’Etudes Démographiques (INED), Paris, France). He has organized several quantitative surveys on mating, youth and the family. His current work focuses on the sociology of human sexuality, specifically in a cross-cultural perspective. He is one of the