Joanna M. Setchell is Senior Lecturer in Evolutionary Anthropology at Durham University, and Director of the MSc in Evolutionary Anthropology. Her research integrates behaviour, morphology and demographic studies with genetics and endocrinology to address questions relating to reproductive strategies, life history and sexual selection in primates.

Deborah J. Curtis is Honorary Research Associate in the Department of Anthropology and Geography at Oxford Brookes University. Her interests focus on lemur biology and she has conducted research on functional anatomy, behaviour and ecology, reproductive endocrinology, food chemistry, activity patterns and genetics. She also works as a scientific and medical translator.