Reproduction, economy and polygyny in eight traditional populations.

OLR: oldest recorded age at last reproduction by a mother or a father. For the Ache, Tsimane, Yanomamo and Turkana, individual data were not available and we therefore used age intervals. MLR: male late-life reproduction, or fraction of net reproductive rate in men realised after the age at last reproduction in women. PrR: post-reproductive representation, or post-reproductive fraction of adult life, in men, women, and ratio of male to female PrR. Polygyny is the percentage of males with more than one wife at the time of data collection. See Methods for data sources.Reproduction, economy and polygyny in eight traditional populations.