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  1. Learning Through Shared Care.Britt Singletary - 2021 - Human Nature 32 (2):326-362.
    This study investigates how allomaternal care impacts human development outside of energetics by evaluating relations between important qualitative and quantitative aspects of AMC and developmental outcomes in a Western population. This study seeks to determine whether there are measurable differences in cognitive and language outcomes as predicted by differences in exposure to AMC via formal and informal networks. Data were collected from 102 mothers and their typically developing infants aged 13–18 months. AMC predictor data were collected using questionnaires, structured daily (...)
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  • Childhood Teaching and Learning among Savanna Pumé Hunter-Gatherers.Karen L. Kramer - 2021 - Human Nature 32 (1):87-114.
    Research in nonindustrial small-scale societies challenges the common perception that human childhood is universally characterized by a long period of intensive adult investment and dedicated instruction. Using return rate and time allocation data for the Savanna Pumé, a group of South American hunter-gatherers, age patterns in how children learn to become productive foragers and from whom they learn are observed across the transition from childhood to adolescence. Results show that Savanna Pumé children care for their siblings, are important economic contributors, (...)
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  • Eusociality in History.Laura Betzig - 2014 - Human Nature 25 (1):80-99.
    For more than 100,000 years, H. sapiens lived as foragers, in small family groups with low reproductive variance. A minority of men were able to father children by two or three women; and a majority of men and women were able to breed. But after the origin of farming around 10,000 years ago, reproductive variance increased. In civilizations which began in Mesopotamia, Egypt, India, and China, and then moved on to Greece and Rome, kings collected thousands of women, whose children (...)
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  • Eusociality in History.Laura Betzig - 2014 - Human Nature 25 (1):80-99.
    For more than 100,000 years, H. sapiens lived as foragers, in small family groups with low reproductive variance. A minority of men were able to father children by two or three women; and a majority of men and women were able to breed. But after the origin of farming around 10,000 years ago, reproductive variance increased. In civilizations which began in Mesopotamia, Egypt, India, and China, and then moved on to Greece and Rome, kings collected thousands of women, whose children (...)
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