GREIG, FIONA; BOHNET, IRIS - In: Economic Inquiry 46 (2008) 1, pp. 77-83
"Norms of reciprocity help enforce cooperative agreements in bilateral sequential exchange. We examine the norms that apply in a reciprocal-exchange economy. In our one-shot investment game in a Nairobi slum, people adhered to the norm of "balanced reciprocity," which obligates quid-pro-quo...