Rebecca Sear is a demographer, anthropologist and human behavioural ecologist, and uses an interdisciplinary approach to understand human behaviour. In particular, she is keen to promote a greater understanding of evolutionary explanations for human behaviour in the social and health sciences. Rebecca works on questions of demographic and public health interest, including fertility, child health and mortality, and health inequalities. She has a particular interest in the family, and how family relationships influence these demographic and health outcomes.