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Hillard Kaplan [8]Hillard S. Kaplan [1]
  1.  56
    Trade-Offs between female food acquisition and child care among hiwi and ache foragers.A. Magdalena Hurtado, Kim Hill, Ines Hurtado & Hillard Kaplan - 1992 - Human Nature 3 (3):185-216.
    Even though female food acquisition is an area of considerable interest in hunter-gatherer research, the ecological determinants of women’s economic decisions in these populations are still poorly understood. The literature on female foraging behavior indicates that there is considerable variation within and across foraging societies in the amount of time that women spend foraging and in the amount and types of food that they acquire. It is possible that this heterogeneity reflects variation in the trade-offs between time spent in food (...)
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  2.  19
    Sexual strategies and social-class differences in fitness in modern industrial societies.Hillard Kaplan & Kim Hill - 1986 - Behavioral and Brain Sciences 9 (1):198-201.
  3.  55
    Does observed fertility maximize fitness among New Mexican men?Hillard S. Kaplan, Jane B. Lancaster, Sara E. Johnson & John A. Bock - 1995 - Human Nature 6 (4):325-360.
    Our objective is to test an optimality model of human fertility that specifies the behavioral requirements for fitness maximization in order (a) to determine whether current behavior does maximize fitness and, if not, (b) to use the specific nature of the behavioral deviations from fitness maximization towards the development of models of evolved proximate mechanisms that may have maximized fitness in the past but lead to deviations under present conditions. To test the model we use data from a representative sample (...)
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  4.  24
    No Sex or Age Difference in Dead-Reckoning Ability among Tsimane Forager-Horticulturalists.Benjamin C. Trumble, Steven J. C. Gaulin, Matt D. Dunbar, Hillard Kaplan & Michael Gurven - 2016 - Human Nature 27 (1):51-67.
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  5.  31
    Determinants of time allocation across the lifespan.Michael Gurven & Hillard Kaplan - 2006 - Human Nature 17 (1):1-49.
    This paper lays the groundwork for a theory of time allocation across the life course, based on the idea that strength and skill vary as a function of age, and that return rates for different activities vary as a function of the combination of strength and skills involved in performing those tasks. We apply the model to traditional human subsistence patterns. The model predicts that young children engage most heavily in low-strength/low-skill activities, middle-aged adults in high-strength/high-skill activities, and older adults (...)
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  6.  22
    Leadership in an Egalitarian Society.Christopher von Rueden, Michael Gurven, Hillard Kaplan & Jonathan Stieglitz - 2014 - Human Nature 25 (4):538-566.
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  7.  82
    A Bioeconomic Approach to Marriage and the Sexual Division of Labor.Michael Gurven, Jeffrey Winking, Hillard Kaplan, Christopher von Rueden & Lisa McAllister - 2009 - Human Nature 20 (2):151-183.
    Children may be viewed as public goods whereby both parents receive equal genetic benefits yet one parent often invests more heavily than the other. We introduce a microeconomic framework for understanding household investment decisions to address questions concerning conflicts of interest over types and amount of work effort among married men and women. Although gains and costs of marriage may not be spread equally among marriage partners, marriage is still a favorable, efficient outcome under a wide range of conditions. This (...)
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  8.  21
    The problem of resource accrual and reproduction in modern human populations remains an unsolved evolutionary puzzle.Hillard Kaplan - 1993 - Behavioral and Brain Sciences 16 (2):297-298.
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  9.  33
    The Social Strategy Game.Stacey L. Rucas, Michael Gurven, Hillard Kaplan & Jeffrey Winking - 2010 - Human Nature 21 (1):1-18.
    This paper examines social determinants of resource competition among Tsimane Amerindian women of Bolivia. We introduce a semi-anonymous experiment (the Social Strategy Game) designed to simulate resource competition among women. Information concerning dyadic social relationships and demographic data were collected to identify variables influencing resource competition intensity, as measured by the number of beads one woman took from another. Relationship variables are used to test how the affiliative or competitive aspects of dyads affect the extent of prosociality in the game. (...)
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