Sutter, Matthias Max Planck Institute for Research on Collective Goods, Max Planck Society;
http://ftp.iza.org/dp8020.pdf (Any fulltext)
Angerer, S., Glätzle-Rützler, D., Lergetporer, P., & Sutter, M. (2015). Donations, risk attitudes and time preferences: A study on altruism in primary school children. Journal of Economic Behavior and Organization, 115, 67-74.