7 found

Year:

  1.  4
    No Association between 2D:4D Ratio and Hunting Success among Hadza Hunters.Duncan N. E. Stibbard-Hawkes - 2020 - Human Nature 31 (1):22-42.
    The ratio of index- and ring-finger lengths is thought to be related to prenatal androgen exposure, and in many, though not all, populations, men have a lower average digit ratio than do women. In many studies an inverse relationship has been observed, among both men and women, between 2D:4D ratio and measures of athletic ability. It has been further suggested that, in hunter-gatherer populations, 2D:4D ratio might also be negatively correlated with hunting ability, itself assumed to be contingent on athleticism. (...)
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  2.  3
    In Memoriam.Peter B. Gray, Alyssa N. Crittenden, Coren L. Apicella, Colette Berbesque, Duncan N. E. Stibbard-Hawkes & Brian Wood - 2020 - Human Nature 31 (1):1-8.
    The ratio of index- and ring-finger lengths is thought to be related to prenatal androgen exposure, and in many, though not all, populations, men have a lower average digit ratio than do women. In many studies an inverse relationship has been observed, among both men and women, between 2D:4D ratio and measures of athletic ability. It has been further suggested that, in hunter-gatherer populations, 2D:4D ratio might also be negatively correlated with hunting ability, itself assumed to be contingent on athleticism. (...)
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  3.  5
    In Memoriam.Edward H. Hagen & Lawrence S. Sugiyama - 2020 - Human Nature 31 (1):9-21.
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  4.  4
    The Effects of the Mating Market, Sex, Age, and Income on Sociopolitical Orientation.Francesca R. Luberti, Khandis R. Blake & Robert C. Brooks - 2020 - Human Nature 31 (1):88-111.
    Sociopolitical attitudes are often the root cause of conflicts between individuals, groups, and even nations, but little is known about the origin of individual differences in sociopolitical orientation. We test a combination of economic and evolutionary ideas about the degree to which the mating market, sex, age, and income affect sociopolitical orientation. We collected data online through Amazon’s Mechanical Turk from 1108 US participants who were between 18 and 60, fluent in English, and single. While ostensibly testing a new online (...)
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  5.  2
    Breastfeeding Duration and the Social Learning of Infant Feeding Knowledge in Two Maya Communities.Luseadra J. McKerracher, Pablo Nepomnaschy, Rachel MacKay Altman, Daniel Sellen & Mark Collard - 2020 - Human Nature 31 (1):43-67.
    Variation in the durations of exclusive breastfeeding and any breastfeeding is associated with socioecological factors. This plasticity in breastfeeding behavior appears adaptive, but the mechanisms involved are unclear. With this concept in mind, we investigated whether durations of exBF and anyBF in a rural Maya population covary with markers of a form of socioecological change—market integration—and whether individual factors and/or learning from others in the community mediate these changes. Using data from 419 mother-child pairs from two Guatemalan Maya villages, we (...)
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  6.  3
    No Association between 2D:4D Ratio and Hunting Success among Hadza Hunters.Duncan N. E. Stibbard-Hawkes - 2020 - Human Nature 31 (1):22-42.
    The ratio of index- and ring-finger lengths is thought to be related to prenatal androgen exposure, and in many, though not all, populations, men have a lower average digit ratio than do women. In many studies an inverse relationship has been observed, among both men and women, between 2D:4D ratio and measures of athletic ability. It has been further suggested that, in hunter-gatherer populations, 2D:4D ratio might also be negatively correlated with hunting ability, itself assumed to be contingent on athleticism. (...)
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  7.  4
    Effortful Control Development in the Face of Harshness and Unpredictability.Shannon M. Warren & Melissa A. Barnett - 2020 - Human Nature 31 (1):68-87.
    Using psychosocial acceleration theory, this multimethod, multi-reporter study examines how early adversity adaptively shapes the development of a self-regulation construct: effortful control. Investigation of links between early life harshness and unpredictability and the development of effortful control could facilitate a nuanced understanding of early environmental effects on cognitive and social development. Using the Building Strong Families national longitudinal data set, aspects of early environmental harshness and early environmental unpredictability were tested as unique predictors of effortful control at age 3 using (...)
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