Hawks and her colleagues believe the lengthening of the lifespan happened pretty quickly in scientific terms – between 24,000 and 60,000 years.
“This combination of grandmothering and increased longevity go together. When there’s grandmothering that makes more grandmothers. And it makes longevity increase from an apelike range into a humanlike range,” she said.
The “grandmother hypothesis” had its roots in research done in the 1980s. Hawkes and anthropologist James O’Connell lived among the hunter-gatherer Hadza people in Tanzania. Older women in that community spent their day gathering food for their grandchildren.
Hawkes says grandmothering made us more socially dependent on each other and “prone to engage each other’s attention.”
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2013-11-25
2013-11-25
2013-11-25
2013-11-25
2013-11-25
2013-11-25