Marrying kin in small‐scale societies

American Journal of Human Biology Vol/Iss. 26(3) Wiley Periodicals, Inc. Published In Pages: 384-388
By Walker, Robert S., Bailey, Drew H.


Subsistence based primarily on hunting-gathering will be associated with extensive kinship systems, whereas agropastoralism will be associated with intensive ones (384).


Average spousal relatedness among agropastoralists is found to be >7 times higher than among hunter-gatherers. Additionally, an interaction effect was discovered via polygyny; that is, polygyny and both spousal relatedness (r-squared = 0.59) and inbreeding (r-squared = 0.48) are positively associated among agropastoralists, but not hunter-gatherers.


Test NameSupportSignificanceCoefficientTail
Linear Mixed Model (LMM) multiple regressionSupportedp < 0.001UNKNOWNUNKNOWN


Variable NameVariable Type OCM Term(s)
InbreedingDependentKinship Regulation Of Sex
Subsistence ActivityIndependentDiet
Spousal RelatednessDependentKinship Regulation Of Sex