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

The presence of metal technology will be positively associated with the frequency of external warfare

Test
Test Name	Support	Significance	Coefficient	Tail
Multiple regression	Supported	p<0.001	0.36	`UNKNOWN`

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

Main Author	Published Year	Hypothesis	Supported	Variables Tested
Leavitt, Gregory C.	1977	The development of technology will be positively associatedwith increasing frequencies of external war, civil war, and riots (but feuding war will decrease as technology develops in society) (53)	Partially supported	5	Cite Related Hypotheses More By Author
Divale, William Tulio	1974	"Uxorilocal or matrilocal residence should be correlated with frequent external warfare while avunculocal or patrilocal residence should be correlated with less frequent external warfare" (297)	Supported	2	Cite Related Hypotheses More By Author
Eff, E. Anthon	2012	The presence of high gods will be negatively associated with the frequency of external warfare	Supported	2	Cite Related Hypotheses More By Author
Eff, E. Anthon	2012	The presence of writing and records will be positively associated with the frequency of external warfare	Supported	2	Cite Related Hypotheses More By Author
Eff, E. Anthon	2012	Low amounts of contact with other societies will be negatively associated with the frequency of external warfare	Supported	2	Cite Related Hypotheses More By Author