Found 1785 Hypotheses across 179 Pages (0.04 seconds)
  1. Contrary to the 'obstetrical dilemma,' there will be geographical variation in the shape of the female birth canal.Betti, Lia - Human variation in the shape of the birth canal is significant and geographi..., 2018 - 2 Variables

    The 'obstetrical dilemma' postulates that human females evolved a pelvis shape that was a compromise between the needs of bipedal locomotion and the need for a wider pelvic opening. The implication is that the female pelvis should be similar across the world. Researchers examine the size and shape of the birth canal of female individuals in the Goldman and Human Origin datasets. Contrary to the 'obstetrical dilemma,' the findings reveal that there is indeed significant geographical variation in size and shape of the female birth canal. Neutral evolutionary processes, particularly genetic drift, were suggested to be influential in female canal shape whereas the predicted effects of climate on canal diversity were only minimal.

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  2. There is a relationship between genetic and phenotypic distance between populations.Betti, Lia - Human variation in the shape of the birth canal is significant and geographi..., 2018 - 2 Variables

    The 'obstetrical dilemma' postulates that human females evolved a pelvis shape that was a compromise between the needs of bipedal locomotion and the need for a wider pelvic opening. The implication is that the female pelvis should be similar across the world. Researchers examine the size and shape of the birth canal of female individuals in the Goldman and Human Origin datasets. Contrary to the 'obstetrical dilemma,' the findings reveal that there is indeed significant geographical variation in size and shape of the female birth canal. Neutral evolutionary processes, particularly genetic drift, were suggested to be influential in female canal shape whereas the predicted effects of climate on canal diversity were only minimal.

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  3. Smaller females will have a larger than expected birth canal.Betti, Lia - Human variation in the shape of the birth canal is significant and geographi..., 2018 - 2 Variables

    The 'obstetrical dilemma' postulates that human females evolved a pelvis shape that was a compromise between the needs of bipedal locomotion and the need for a wider pelvic opening. The implication is that the female pelvis should be similar across the world. Researchers examine the size and shape of the birth canal of female individuals in the Goldman and Human Origin datasets. Contrary to the 'obstetrical dilemma,' the findings reveal that there is indeed significant geographical variation in size and shape of the female birth canal. Neutral evolutionary processes, particularly genetic drift, were suggested to be influential in female canal shape whereas the predicted effects of climate on canal diversity were only minimal.

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  4. There will be a relationship between overall canal shape differences and temperature differences.Betti, Lia - Human variation in the shape of the birth canal is significant and geographi..., 2018 - 2 Variables

    The 'obstetrical dilemma' postulates that human females evolved a pelvis shape that was a compromise between the needs of bipedal locomotion and the need for a wider pelvic opening. The implication is that the female pelvis should be similar across the world. Researchers examine the size and shape of the birth canal of female individuals in the Goldman and Human Origin datasets. Contrary to the 'obstetrical dilemma,' the findings reveal that there is indeed significant geographical variation in size and shape of the female birth canal. Neutral evolutionary processes, particularly genetic drift, were suggested to be influential in female canal shape whereas the predicted effects of climate on canal diversity were only minimal.

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  5. Global mandibular morphological variation will be associated with geographic distance (19546).von Cramon-Taubadel, Noreen - Global human mandibular variation reflects differences in agricultural and h..., 2011 - 2 Variables

    The researchers test the relationship between global mandibular morphology variation and susbsistence economy, population history, geography, and climate. While some mandibular variation is significantly correlated with geography, the most significant relationship is with subsistence activity. The strength of the relationship leads the authors to speculate on how masticatory behavior might have affected jaw shape, either through stress, weaning behavior, or other demographic factors.

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  6. Differences in primary school completion and literacy rates between polygamous and non-polygamous societies will disappear with greater distance from missions.Becker, Bastian - The colonial struggle over polygamy: Consequences for educational expansion ..., 2021 - 4 Variables

    In this study, the author closely examines the educational outcomes of Christian missions in sub-Saharan African societies. He shows that there was local demand for formal education, but theorizes that this demand decreased in polygamous societies as Christian missionaries required monogamy for entry. His results show areas that experienced this struggle over polygamy are associated with worse educational outcomes than those that did not.

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  7. Human sexual dimorphism of stature will be associated with latitude category (409, 413).Wolfe, Linda D. - Latitude and intersocietal variation of human sexual dimorphism of stature, 1982 - 2 Variables

    This article examines the relationship between sexual dimorphism of stature and latitude; data support the association. The authors also find support for an association between latitude and human marriage systems, a variable proposed by Alexander (1979) to explain variation in sexual dimorphism of stature. When societies are categorized by latitude, the relationships between marriage systems and sexual dimorphism do not reach significance. Overall the authors emphasize the influence of environmental adaptation on sexual dimorphism rather than an explanation solely focused on male-male competition.

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  8. Primary school completion and literacy rates will be negatively correlated with distance to missions.Becker, Bastian - The colonial struggle over polygamy: Consequences for educational expansion ..., 2021 - 3 Variables

    In this study, the author closely examines the educational outcomes of Christian missions in sub-Saharan African societies. He shows that there was local demand for formal education, but theorizes that this demand decreased in polygamous societies as Christian missionaries required monogamy for entry. His results show areas that experienced this struggle over polygamy are associated with worse educational outcomes than those that did not.

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  9. Separate marital property will be positively correlated with intimate partner violence in Sub-Saharan Africa.Anderson, Siwan - Intimate partner violence and female property rights, 2021 - 2 Variables

    This article studied the effects of common law in Sub-Saharan Africa on property rights of women and its relationship to intimate partner violence. The authors first compared intimate partner violence (IPV) in 593 ethnic groups with a separate marital property regime against groups with a community marital property regime. Then, the authors examined the correlation between women who justify IPV and the presence of a separate marital property regime. They found that separate marital property both increased the likelihood of intimate partner violence and the justification of IPV when compared to a community property regime. The authors use these findings to advocate for marital property rights reform to help reduce partner violence cases.

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  10. Separate marital property will be positively correlated with women justifying intimate partner violence in Sub-Saharan Africa.Anderson, Siwan - Intimate partner violence and female property rights, 2021 - 2 Variables

    This article studied the effects of common law in Sub-Saharan Africa on property rights of women and its relationship to intimate partner violence. The authors first compared intimate partner violence (IPV) in 593 ethnic groups with a separate marital property regime against groups with a community marital property regime. Then, the authors examined the correlation between women who justify IPV and the presence of a separate marital property regime. They found that separate marital property both increased the likelihood of intimate partner violence and the justification of IPV when compared to a community property regime. The authors use these findings to advocate for marital property rights reform to help reduce partner violence cases.

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