Tomasello, Michael Department of Developmental and Comparative Psychology, Max Planck Institute for Evolutionary Anthropology, Max Planck Society;
Warneken, F., & Tomasello, M. (2013). Parental presence and encouragement do not influence helping in young children. Infancy, 18(3), 345-368. doi:10.1111/j.1532-7078.2012.00120.x.