HSS
California Institute of Technology
Division of the Humanities and Social Sciences

The Roots of Human Sociality

An Ethno-Experimental Exploration of the Foundations of Economic Norms

In economic experiments carried out in less developed small-scale societies around the world, a group of anthropologists and economists has found consistent deviations from experimental patterns observed among populations in highly developed societies. While the latter experiments have mostly been conducted with university undergraduates, the subjects in all of these small-scale societies are more representative of their populations and for this reason the data may tell us more about the underlying societal social norms revealed in the experimental games. These experiments were carried out among foragers, horticulturalists, nomadic herders, cash-crop farmers, and small communities in the United States. The researchers have run ultimatum, public goods, dictator, trust, and double-blind dictator games. Coordination of protocols and collection of community and individual socio-economic variables afford the opportunity to test many propositions regarding the evolution of pro-social norms within and across societies.

The project has consisted of two phases so far: