Beheim, Bret Alexander Department of Human Behavior Ecology and Culture, Max Planck Institute for Evolutionary Anthropology, Max Planck Society;
Mattison, S., Beheim, B. A., Chak, B., & Buston, P. (in preparation). Parity progression rations are consistent with son-biased parental investment among the patrilineal, but not matrilineal, Mosuo of Southwest China.