Hypotheses
- 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.
Related Hypotheses Cite More By Author - Pair-bond instability (proxy measure being higher incidence of maternal half siblings) will be greater where male contribution to subsistence is lower. (2)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.
Related Hypotheses Cite More By Author - Pair-bond instability (proxy measure being higher incidence of maternal half siblings) will be greater in the absence of amassable, heritable resources. (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.
Related Hypotheses Cite More By Author - Male reproductive skew (proxy measure being incidence of paternal half-siblings) will be highest in horticultural societies in comparison to other subsistence modes. (2)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.
Related Hypotheses Cite More By Author - Partible paternal societies will have higher fractions of paternal half-siblings than singular paternity societies. (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.
Related Hypotheses Cite More By Author - Pair-bond instability (proxy measure being higher incidence of maternal half siblings) will be greater among partible paternity societies. (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.
Related Hypotheses Cite More By Author - "Teen birth rates will be lower at high latitudes" (30).Barber, Nigel - On the relationship between country sex ratios and teen pregnancy rates, 2000 - 2 Variables
This study attempted to replicate earlier findings regarding population structure and teen pregnancy rates. Findings support the previous predictions that sex ratio, economic development, and latitude are all inversely related to teen birth rates.
Related Hypotheses Cite More By Author - The presence of older siblings who are potential helpers will have a positive effect on child survival (11).Sear, Rebecca - Who keeps children alive? A review of the effects of kin on child survival, 2008 - 2 Variables
Evolutionary anthropologists have long emphasized the puzzle of short inter-birth intervals, extended childhoods, and long post-reproductive lives of humans, in particular the problem it poses for raising children. While there is agreement that mothers receive assistance from kin to offset the high costs of raising children, opinion is equivocal as to which kin help and to what extent they help. Here the authors review 45 studies from historical and contemporary natural fertility populations to assess the effects of various types of kin on child survival rates.
Related Hypotheses Cite More By Author - At lower latitudes there will be more ethnic groups in a region (974).Cashdan, Elizabeth - Ethnic diversity and its environmental determinants: effects of climate, pat..., 2001 - 2 Variables
This article examines possible environmental predictors of ethnic diversity around the world. Results suggest that global ethnic diversity is associated with latitude, habitat diversity, pathogen stress, and climate.
Related Hypotheses Cite More By Author - Cultures with non-classical polyandry tend to be small scale and egalitarian societies that produce food through hunting and gathering and horticulture (p. 161).Starkweather, Katherine E. - A survey of non-classical polyandry, 2012 - 4 Variables
This article explores determinants of non-classical polyandry, which the authors assert is more common than is usually conveyed. Results indicate that societies with non-classical polyandry tend to be small scale and egalitarian, practice hunting and gathering or horticulture, and have a male-skewed sex ratio. Overall polyandry is thought to add to the reproductive fitness of both men and women.
Related Hypotheses Cite More By Author