Barrett, H. Clark Center for Adaptive Behavior and Cognition, Max Planck Institute for Human Development, Max Planck Society;
Hagen, E. H., Barrett, H. C., & Price, M. E. (2006). Do human parents face a quantity-quality tradeoff? Evidence from a Shuar community. American Journal of Physical Anthropology, 130(3), 405-418. doi:10.1002/ajpa.20272.