Found 3462 Hypotheses across 347 Pages (0.007 seconds)
  1. Climate and subsistence type will be associated with the percentage of animal foods in the diet.Pontzer, Herman - Effects of Evolution, Ecology, and Economy on Human Diet: Insights from Hunt..., 2021 - 3 Variables

    This study, primarily a review on the evolution of the human diet, also includes a small study on the distribution of meat-eating and its relationship with climate and cultural factors, namely subsistence type. The authors find that societies with subsistence strategies that prioritize fishing, hunting, or pastoralism also tend to consume more animal products, whereas those that focus on agriculture have more plant-based diets. The authors argue that these small-scale societies have a healthier approach to diet than industrialized societies regardless of their subsistence type or meat consumption.

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  2. Controlling for habitat quality, hunter-gatherers will experience more famine than agriculturalists (1).Berbesque, J. Colette - Hunter-gatherers have less famine than agriculturalists, 2014 - 3 Variables

    This study tests the common belief that hunter-gatherers suffer more famine than other subsistence types. Controlling for habitat quality, authors examine the relationship between famine and subsistence type and find that hunter-gatherers actually experience significantly less famine than other subsistence types.

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  3. A model including environmental setting and mortality rates will be significant in predicting adult height (p. S360).Migliano, Andrea Bamberg - The effects of mortality, subsistence, and ecology on human adult height and..., 2012 - 4 Variables

    By better understanding the factors influencing adult height in modern populations, the authors hope to generate a testable hypothesis to determine the factors affecting body size during hominin evolution. The authors employ an exploratory linear regression model to test the effects of mortality, environment, and subsistence strategy on adult height among traditional small scale human societies. They found that mortality rates were the most significant predictor of adult height and that people living in savanna environments are consistently taller.

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  4. Adult violence mortality is higher among horticulturalists compared to hunter-gatherers (164).Hames, Raymond - Pacifying Hunter-Gatherers, 2019 - 2 Variables

    In this article Hames addresses the long-standing disagreements between evolutionary theories regarding human warfare (more specifically between Rousseauian and Hobbesian frameworks). This study posits that while most current and previous research focuses on the discrepancies between the frequency and intensity with which warfare takes place between hunter-gatherer and large-scale societies, the ability for societies to live in peace with their neighbors despite the possibility for warfare, is the most important evolutionary trait. Coexisting peacefully is what distinguishes human socially and politically from chimpanzees whereas warfare itself is a more primitive trait humans share with previous ancestors. Hames concludes that going forward, use of phylogenetic methods to control for common ancestry, and use of archaeological data would lead to new and more comprehensive findings. Although largely a review of principal warfare literature, Hames does present an original statistical finding on adult violence mortality which is reported below.

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  5. The type of food given to children during weaning was qualitatively different across subsistence types (p. 50).Sellen, Daniel W. - Relationships between subsistence and age at weaning in "preindustrial" soci..., 2001 - 2 Variables

    This study tests the weaning food availability hypothesis, that both the introduction of foods other than breastmilk and the cessation of breastfeeding will vary by society's subsistence type. This hypothesis has implications for demography, as accelerated weaning can lead to increases in both mothers' fertility (due to decreased birth intervals) and infant mortality (due to the presence of pathogens in new foods).

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  6. Societies in which morning sickness was not observed will be significantly more likely to have (i) only plants as a food staple, (ii) corn as a staple, and (iii) corn as the only staple than societies in which morning sickness was observed (129).Flaxman, Samuel M. - Morning sickness: a mechanism for protecting mother and embryo, 2000 - 4 Variables

    Pregnancy sickness is characterized by nausea, vomiting, and food aversions during pregnancy, particularly during the first trimester. Previous work has asserted an adaptationist explanation for this phenomenon: pregnancy sickness protects the embryo from the toxic compounds found in many foods via expulsion (i.e., vomiting) of potentially dangerous foods and by encouraging aversions to foods likely to harbor toxins or pathogens. The authors reexamine 27 small-scale societies previously investigated by Minturn and Weiher (1984) for evidence of pregnancy sickness and food aversions in light of the fetal protection hypotheses.

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  7. Societies in which morning sickness was not observed will be significantly less likely to have meat as a staple and slightly less likely to have rice as a staple than societies in which morning sickness was observed (129).Flaxman, Samuel M. - Morning sickness: a mechanism for protecting mother and embryo, 2000 - 3 Variables

    Pregnancy sickness is characterized by nausea, vomiting, and food aversions during pregnancy, particularly during the first trimester. Previous work has asserted an adaptationist explanation for this phenomenon: pregnancy sickness protects the embryo from the toxic compounds found in many foods via expulsion (i.e., vomiting) of potentially dangerous foods and by encouraging aversions to foods likely to harbor toxins or pathogens. The authors reexamine 27 small-scale societies previously investigated by Minturn and Weiher (1984) for evidence of pregnancy sickness and food aversions in light of the fetal protection hypotheses.

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  8. Hunter-gatherers will experience more famine than those with other modes of subsistence (1).Berbesque, J. Colette - Hunter-gatherers have less famine than agriculturalists, 2014 - 2 Variables

    This study tests the common belief that hunter-gatherers suffer more famine than other subsistence types. Controlling for habitat quality, authors examine the relationship between famine and subsistence type and find that hunter-gatherers actually experience significantly less famine than other subsistence types.

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  9. The infant/child's age at the cessation of breastfeeding is lower in preindustrial populations with agricultural or pastoral subsistence type than in hunting and gathering socieities (p. 50).Sellen, Daniel W. - Relationships between subsistence and age at weaning in "preindustrial" soci..., 2001 - 2 Variables

    This study tests the weaning food availability hypothesis, that both the introduction of foods other than breastmilk and the cessation of breastfeeding will vary by society's subsistence type. This hypothesis has implications for demography, as accelerated weaning can lead to increases in both mothers' fertility (due to decreased birth intervals) and infant mortality (due to the presence of pathogens in new foods).

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  10. Pair-bond instability (proxy measure being higher incidence of maternal half siblings) will be lower at higher latitudes, irrespective of subsistence mode. (2-3)Ellsworth, Ryan M. - Comparative study of reproductive skew and pair-bond stability using genealo..., 2015 - 2 Variables

    Authors use genealogical data to investigate pair bond stability and reproductive skew across a sample of 80 small-scale societies. Results suggest that male reproductive skew and pair-bond stability are independent sources of cross-cultural variation in human mating patterns.

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