House, B. R., Silk, J. B., Henrich, J., Barrett, H. C., Scelza, B. A., Boyette, A. H., et al. (2013).
Ontogeny of prosocial behavior across diverse societies. Proceedings of the National Academy of Sciences
of the United States of America, 110(36), 14586-14591. doi:10.1073/pnas.1221217110.