What hunter-gatherers can tell us about fundamental human social networks

http://www.eurekalert.org/pub_releases/2016-07/cp-whc071316.php

Public Release: 21-Jul-2016
What hunter-gatherers can tell us about fundamental human social networks
Cell Press

Long before the advent of social media, human social networks were built around sharing a much more essential commodity: food. Now, researchers reporting on the food sharing networks of two contemporary groups of hunter-gatherers in the Cell Press journal Current Biology on July 21 provide new insight into fundamental nature of human social organization.

The new work reveals surprising similarities between the Agta of the Philippines and Mbendjele of the Republic of Congo. In both places, individuals maintain a three-tiered social network that appears to buffer them against day-to-day shortfalls in foraging returns.

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"No other apes share food to the extent that humans do," says Andrea Migliano (@andrea_migliano), principal investigator of the Leverhulme Trust-funded Hunter-Gatherers Resilience Project. "Hunter-gatherers' multi-level social structure exists in different groups, to help regulate these cooperative systems. Furthermore, multi-level social structures regulate social rules, friendship and kinship ties, and the spread of social norms, promoting a more efficient sharing and cooperation. Sharing is a crucial adaptation to hunter-gatherers' lifestyles, central to their resilience--and central to the evolution of mankind."

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"Cooperation and especially food sharing are essential for survival in a hunting-and-gathering economy," Dyble says. "The proverb that 'it takes a village to raise a child' is certainly true for hunter-gatherers, who, without food sharing to mitigate the day-to-day shortfalls in foraging, could simply not survive."

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