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  Greater wealth inequality, less polygyny: rethinking the polygyny threshold model

Ross, C. T., Borgerhoff Mulder, M., Oh, S.-Y., Bowles, S., Beheim, B., Bunce, J., et al. (2018). Greater wealth inequality, less polygyny: rethinking the polygyny threshold model. Interface: Journal of the Royal Society, 15(144): 20180035. doi:10.1098/rsif.2018.0035.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0001-DA63-A Version Permalink: http://hdl.handle.net/21.11116/0000-0003-959B-6
Genre: Journal Article

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 Creators:
Ross, Cody T., Author
Borgerhoff Mulder, Monique, Author
Oh, Seung-Yun, Author
Bowles, Samuel, Author
Beheim, Bret, Author
Bunce, John, Author
Caudell, Mark, Author
Clark, Gregory, Author
Colleran, Heidi1, Author              
Cortez, Carmen, Author
Draper, Patricia, Author
Greaves, Russell D., Author
Gurven, Michael, Author
Headland, Thomas, Author
Headland, Janet, Author
Hill, Kim, Author
Hewlett, Barry, Author
Kaplan, Hillard S., Author
Koster, Jeremy, Author
Kramer, Karen, Author
Marlowe, Frank, AuthorMcElreath, Richard, AuthorNolin, David, AuthorQuinlan, Marsha, AuthorQuinlan, Robert, AuthorRevilla-Minaya, Caissa, AuthorScelza, Brooke, AuthorSchacht, Ryan, AuthorShenk, Mary, AuthorUehara, Ray, AuthorVoland, Eckart, AuthorWillf{ü}hr, Kai, AuthorWinterhalder, Bruce, AuthorZiker, John, Author more..
Affiliations:
1Linguistic and Cultural Evolution, Max Planck Institute for the Science of Human History, Max Planck Society, ou_2074311              

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 Abstract: Monogamy appears to have become the predominant human mating system with the emergence of highly unequal agricultural populations that replaced relatively egalitarian horticultural populations, challenging the conventional idea—}based on the polygyny threshold model{—that polygyny should be positively associated with wealth inequality. To address this polygyny paradox, we generalize the standard polygyny threshold model to a mutual mate choice model predicting the fraction of women married polygynously. We then demonstrate two conditions that are jointly sufficient to make monogamy the predominant marriage form, even in highly unequal societies. We assess if these conditions are satisfied using individual-level data from 29 human populations. Our analysis shows that with the shift to stratified agricultural economies: (i) the population frequency of relatively poor individuals increased, increasing wealth inequality, but decreasing the frequency of individuals with sufficient wealth to secure polygynous marriage, and (ii) diminishing marginal fitness returns to additional wives prevent extremely wealthy men from obtaining as many wives as their relative wealth would otherwise predict. These conditions jointly lead to a high population-level frequency of monogamy.

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Language(s): eng - English
 Dates: 2018-07-182018-07
 Publication Status: Published in print
 Pages: 15
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1098/rsif.2018.0035
Other: shh1033
 Degree: -

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Title: Interface : Journal of the Royal Society
  Other : J. R. Soc. Interface
Source Genre: Journal
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Publ. Info: London : Royal Society
Pages: - Volume / Issue: 15 (144) Sequence Number: 20180035 Start / End Page: - Identifier: ISSN: 1742-5689
CoNE: https://pure.mpg.de/cone/journals/resource/1000000000018840_1