Multiple Caretaking in the Context of Human Evolution: Why Don't the Efé Know the Western Prescription for Child Care?**This research was supported by funds from the National Science Foundation, Sigma Xi Society, the Swann Foundation, and Faculty Research Funds from the University of Massachusetts. We would like to thank Carolyn Edwards, Robert Bailey, Sylvia Foreman, David Wilkie, and Ted Plimpton for their comments. The authors also wish to thank Dr. Kabamba Nkmani, Director of Ceplanut, for his help and advice. This project would not have been possible without this assistance.