Jacqueline Scott is a Reader in Sociology at the University of Cambridge and Co-Director of the Cambridge Interdisciplinary Research Centre on Ageing. Her recent publications examine youth and disadvantage, inter-generational attitudinal change and cross-national comparisons of family and demographic change.

Judith Treas is Professor of Sociology at the University of California, Irvine. A Fellow of the Gerontological Society of America, she is recognized for research on the life course and aging, family, sexuality, inequality, and population. Her recent publications investigate cross-national differences in gender beliefs and family behavior, the lives of elderly immigrants, and the determinants of change in sexual attitudes.

Martin Richards is Director of the Centre for Family Research and Professor Family Research at the University of Cambridge. His publications include Sexual Arrangements: Marriage and Affairs (with Janet Reibstein, 1963), What is a Parent: A Socio-Legal Analysis (2001) and Body Lore and Laws (2002), both edited with Andrew Bainham and Shelley Day-Sclater.