Somatic Capital

This idea sounds rather familiar.

Grall, 2011. Climate Change, Somatic Capital, and the Timing of the Neolithic Transition

In this paper I argue that the migration of early modern humans out of Africa into Western Asia and Eastern Europe between 40 and 45 kya and then into Europe between 40 and 36 kya triggered an evolutionary adaptation to the cold and harsh climate in Eurasia during the ice age. Lower hunter-gatherer productivity in climatically challenging environments was overcompensated by increased somatic investment in off spring, reallocating parental investment from child quantity towards child quality. A higher research productivity of individuals accelerated the rate of technical progress in human populations living in cold areas of the ice age, eventually leading to an earlier Neolithic transition.

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