Journal
AMERICAN ECONOMIC REVIEW
Volume 93, Issue 1, Pages 150-169Publisher
AMER ECONOMIC ASSOC
DOI: 10.1257/000282803321455205
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The economics of hunting and gathering must have driven the biological evolution of human characteristics, since hunter-gatherer societies prevailed for the two million years of human history. These societies feature huge intergenerational resource flows, suggesting that these resource flows should replace fertility as the key demographic consideration. It is then theoretically expected that life expectancy and brain size would increase simultaneously, as apparently occurred during our evolutionary history. The brain here is considered as a direct form. of bodily investment, but also crucially as facilitating further indirect investment by means of learning-by-doing.
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