- Long-term reciprocation of grooming in wild West African chimpanzeesCristina M Gomes
Max Planck Institute for Evolutionary Anthropology, Deutscher Platz 6, 04103 Leipzig, Germany
Proc Biol Sci 276:699-706. 2009..Our findings strongly suggest that chimpanzees, similar to humans, are able to keep track of past social interactions, at least for a one-week period, and balance services over repeated encounters...
- Wild chimpanzees exchange meat for sex on a long-term basisCristina M Gomes
Max Planck Institute for Evolutionary Anthropology, Leipzig, Germany
PLoS ONE 4:e5116. 2009..Similar studies on humans will determine if the direct nutritional benefits that women receive from hunters in foraging societies could also be driving the relationship between reproductive success and good hunting skills...