Sex and Gender Alami, S., von Rueden, C., Seabright, E., Kraft, T.S., Blackwell, A.D., Stieglitz, J., Kaplan, H., & Gurven, M. 2020. Proceedings of the Royal Society B, 287(1922). DOI: 10.1098/rspb.2019.2783. 2020 Sarah Alami Gouraftei