Romano, Angelo Max Planck Institute for Research on Collective Goods, Max Planck Society;
http://www.pnas.org/content/114/48/12702.full.pdf (beliebiger Volltext)
Romano, A., Balliet, D., Yamagishi, T., & Liu, J. H. (2017). Parochial trust and cooperation across 17 societies. PNAS, Proceedings of the National Academy of Sciences of the United States, 114(8), 12702-127707.