Found 1938 Hypotheses across 194 Pages (0.01 seconds)
  1. Association between male status and reproductive success is stronger among contemporary foragers than non-foragers (10825).von Rueden, Christopher R. - Men’s status and reproductive success in 33 nonindustrial societies: Effects..., 2016 - 3 Variables

    The researchers examine associations between male status and various measures of reproductive success among foraging/non-foraging, and monogamous/polygynous societies in order to test the "egalitarian hypothesis" which predicts lower status effects in hunter-gatherer groups. Contrary to this hypothesis, they find that male social status is equally significantly associated with reproductive success in foraging and nonforaging societies. Additional support is found for the "mating effort" hypothesis, which predicts that male reproductive success will be more associated with fertility than offspring mortality in polygynous societies, leading the authors to make various suggestions regarding the evolutionary mechanisms at play.

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  2. The sex ratio at birth will decline with polygyny.Barber, Nigel - Sex Ratio at Birth, Polygyny, and Fertility: A Cross-National Study, 2004 - 2 Variables

    This article discusses the variation in sex ratios at birth among human populations and the possible explanations for this variation. One possible explanation is the timing of intercourse and its relationship to the frequency of intercourse, which can affect the timing of conception. The article presents evidence that the male/female sex ratios of 148 countries declined with total fertility rates and polygyny intensity and increased with contraception use in correlational analysis. These results were independent of mother's age and level of economic development. The predictive effect of polygyny and contraception disappeared when total fertility was added to the equation. The article also considers other possible explanations for the variation in sex ratios, such as genetics, hormones, nutrition, and social factors.

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  3. The secondary sex ratio will decline as total fertility increases.Barber, Nigel - Sex Ratio at Birth, Polygyny, and Fertility: A Cross-National Study, 2004 - 2 Variables

    This article discusses the variation in sex ratios at birth among human populations and the possible explanations for this variation. One possible explanation is the timing of intercourse and its relationship to the frequency of intercourse, which can affect the timing of conception. The article presents evidence that the male/female sex ratios of 148 countries declined with total fertility rates and polygyny intensity and increased with contraception use in correlational analysis. These results were independent of mother's age and level of economic development. The predictive effect of polygyny and contraception disappeared when total fertility was added to the equation. The article also considers other possible explanations for the variation in sex ratios, such as genetics, hormones, nutrition, and social factors.

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  4. Male contribution to subsistence will be positively associated with female fertility (756, 758).Marlowe, Frank W. - Male contribution to diet and female reproductive success, 2001 - 2 Variables

    This article seeks to understand male-female bonding by testing the relationship between male contribution to subsistence (a proxy for male provisioning) and female reproductive success in foraging societies. Analysis supports a positive association.

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  5. Male contribution to subsistence will be positively associated with female reproductive success (756, 758).Marlowe, Frank W. - Male contribution to diet and female reproductive success, 2001 - 2 Variables

    This article seeks to understand male-female bonding by testing the relationship between male contribution to subsistence (a proxy for male provisioning) and female reproductive success in foraging societies. Analysis supports a positive association.

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  6. The sex ratio should be higher in countries where contraception is widely practiced.Barber, Nigel - Sex Ratio at Birth, Polygyny, and Fertility: A Cross-National Study, 2004 - 2 Variables

    This article discusses the variation in sex ratios at birth among human populations and the possible explanations for this variation. One possible explanation is the timing of intercourse and its relationship to the frequency of intercourse, which can affect the timing of conception. The article presents evidence that the male/female sex ratios of 148 countries declined with total fertility rates and polygyny intensity and increased with contraception use in correlational analysis. These results were independent of mother's age and level of economic development. The predictive effect of polygyny and contraception disappeared when total fertility was added to the equation. The article also considers other possible explanations for the variation in sex ratios, such as genetics, hormones, nutrition, and social factors.

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  7. Early mortality risk will have a larger impact on adolescent fertility rates than current mortality risk. (4004)Placek, Caitlyn D. - Adolescent fertility and risky environments: a population-level perspective ..., 2012 - 3 Variables

    This study provides the first tests of the relationships between population-level adolescent fertility rates and mortality risk at two different time points. The hypotheses are based in life-history theory, which predicts that human reproductive choices are shaped by mortality. The authors find that reproductive strategies are significantly predicted by both early (between ages 1-7) risks of mortality and current cues of mortality risk.

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  8. Current mortality risk will mediate the relationship between early mortality risk and adolescent fertility rates. (4004)Placek, Caitlyn D. - Adolescent fertility and risky environments: a population-level perspective ..., 2012 - 3 Variables

    This study provides the first tests of the relationships between population-level adolescent fertility rates and mortality risk at two different time points. The hypotheses are based in life-history theory, which predicts that human reproductive choices are shaped by mortality. The authors find that reproductive strategies are significantly predicted by both early (between ages 1-7) risks of mortality and current cues of mortality risk.

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  9. Different levels of early mortality risk will influence the relationship between current risk of death and reproductive outcomes. (4004)Placek, Caitlyn D. - Adolescent fertility and risky environments: a population-level perspective ..., 2012 - 3 Variables

    This study provides the first tests of the relationships between population-level adolescent fertility rates and mortality risk at two different time points. The hypotheses are based in life-history theory, which predicts that human reproductive choices are shaped by mortality. The authors find that reproductive strategies are significantly predicted by both early (between ages 1-7) risks of mortality and current cues of mortality risk.

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  10. Societies where the attaining of wives is by relatively easy means, such as token bride price, gift exchange, or receipt of dowry, will have a high composite fertility level (280, 263).Textor, Robert B. - A Cross-Cultural Summary: Fertility, 1967 - 2 Variables

    Textor summarizes cross-cultural findings on polygyny pertaining to cultural, environmental, psychological, and social phenomena.

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