Keller, Monika Center for Adaptive Behavior and Cognition, Max Planck Institute for Human Development, Max Planck Society;
http://www.epjournal.net/filestore/ep07295316.pdf (Publisher version)
az1000470.pdf (Publisher version), 289KB
Gummerum, M., Takezawa, M., & Keller, M. (2009). The influence of social category and reciprocity on adults' and children's altruistic behavior. Evolutionary Psychology, 7(2), 295-316. Retrieved from http://www.epjournal.net/filestore/ep07295316.pdf.