On the development of unilineal descent

". . . given internal war, lineages are more apt to be found when the density is at least five persons per square mile" (83)

Test
Test Name	Support	Significance	Coefficient	Tail
phi, Fisher's exact test	Supported	p<.001	.74	One-tailed

Variables
Variable Name	Variable Type	OCM Term(s)
Lineages	Dependent	Lineages
Population Density	Independent	Population
Warfare (presence Or Absence Of Internal Or External)	Independent	Warfare

Main Author	Published Year	Hypothesis	Supported	Variables Tested
Ember, Carol R.	1974	". . . among unilineal societies with internal warfare, those with higher densities would be more likely to have lineages than those with low densities" (82)	Supported	4	Cite Related Hypotheses More By Author
Ember, Carol R.	1974	". . . we . . . expect that societies with internal warfare would be more apt to have lineages than those with purely external war . . ." (80)	Supported	2	Cite Related Hypotheses More By Author
Winkelman, Michael James	1998	Population density, population pressure, internal and external war for land and resources, and a low hierarchical focus of religion will be positively associated with human sacrifice (285, 294).	Supported	5	Cite Related Hypotheses More By Author
Kang, Gay Elizabeth	1979	Societies that practice lineage exogamy will have peace between the lineages (90).	Not Supported	2	Cite Related Hypotheses More By Author
Kang, Gay Elizabeth	1979	Societies that practice lineage exogamy will have peace within the lineages (90).	Not Supported	2	Cite Related Hypotheses More By Author