Farming and Fighting: An Empirical Analysis of the Ecological-Evolutionary Theory of the Incidence of Warfare

Population density will be positively associated with the frequency of external war

A significant correlation was found in the opposite direction

Test
Test Name	Support	Significance	Coefficient	Tail
Multiple regression	Not supported	p<0.001	-0.42	`UNKNOWN`

Variables
Variable Name	Variable Type	OCM Term(s)
Frequency Of External Warfare	Dependent variable	External Relations, Instigation Of War
Population Density	Independent variable	Population

Main Author	Published Year	Hypothesis	Supported	Variables Tested
Kelly, Robert L.	2000	Population density will be positively associated with warfare frequency (71).	Not Supported	2	Cite Related Hypotheses More By Author
Kelly, Raymond C.	2000	Population density will be positively associated with frequency of warfare (71).	Not Supported	2	Cite Related Hypotheses More By Author
Barry III, Herbert	2003	Controlling on four types of complexity, external warfare is positively associated with government levels (126)	`UNKNOWN`	6	Cite Related Hypotheses More By Author
Carter, Jr., Harold	1977	"Societies with uxorilocal/matrilocal residence are more likely to have a high frequency of external warfare than societies with virilocal/patrilocal residence" (275).	Supported	2	Cite Related Hypotheses More By Author
Adams, David B.	1983	Population size over 20,000 is positively associated with the existence of frequent internal warfare combined with low frequency of warfare (203)	Supported	3	Cite Related Hypotheses More By Author