Human Nature 21 (1):62-81 (2010)

When wealth is heritable, parents may manipulate family size to optimize the trade-off between more relatively poor offspring and fewer relatively rich ones, and channel less care into offspring that compete with siblings. These hypotheses were tested with quantitative ethnographic data collected among the Karo Batak—patrilineal agriculturalists from North Sumatra, Indonesia, among whom land is bequeathed equally to sons. It was predicted that landholding would moderate the relationship between reproductive rate and parental investment on one hand, and the number of same-sex siblings on the other, among boys but not girls. The predicted interaction effect was observed in interbirth intervals and immunizations, but only a trace of the effect was detected in age-five mortality. The study raises questions about the coevolution of human behavior and social structure
Keywords Interbirth intervals  Patrilineality  Landownership  Inheritance  Child health
Categories (categorize this paper)
DOI 10.1007/s12110-010-9082-4
Edit this record
Mark as duplicate
Export citation
Find it on Scholar
Request removal from index
Revision history

Download options

PhilArchive copy

Upload a copy of this paper     Check publisher's policy     Papers currently archived: 70,192
External links

Setup an account with your affiliations in order to access resources via your University's proxy server
Configure custom proxy (use this if your affiliation does not provide a proxy)
Through your library

References found in this work BETA

Brothers and Sisters.Monique Borgerhoff Mulder - 1998 - Human Nature 9 (2):119-161.

View all 7 references / Add more references

Citations of this work BETA

Add more citations

Similar books and articles

Brothers and Sisters.Monique Borgerhoff Mulder - 1998 - Human Nature 9 (2):119-161.
Optimizing Modern Family Size.David W. Lawson & Ruth Mace - 2010 - Human Nature 21 (1):39-61.
Matrilineal Inheritance: New Theory and Analysis.John Hartung - 1985 - Behavioral and Brain Sciences 8 (4):661-670.
Kin and Child Survival in Rural Malawi.Rebecca Sear - 2008 - Human Nature 19 (3):277-293.


Added to PP index

Total views
14 ( #732,190 of 2,507,377 )

Recent downloads (6 months)
2 ( #277,263 of 2,507,377 )

How can I increase my downloads?


My notes