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

War wealth will be positively associated with the frequency of external warfare

Test
Test Name	Support	Significance	Coefficient	Tail
Multiple regression	Supported	p<0.001	0.27	`UNKNOWN`

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

Main Author	Published Year	Hypothesis	Supported	Variables Tested
Kelly, Raymond C.	2000	Marriage practices pertaining to exogamy will be positively related to frequency of internal and external warfare (62).	Supported	2	Cite Related Hypotheses More By Author
Eff, E. Anthon	2012	Population density will be positively associated with the frequency of external war	Not supported	2	Cite Related Hypotheses More By Author
Leavitt, Gregory C.	1977	The increasing frequency of differentiation in societies will be positively associated with an increase in external war, civil war, and riots (feuding will decrease in frequency as societies become increasingly differentiated) (54)	`UNKNOWN`	5	Cite Related Hypotheses More By Author
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
Nawata, Kengo	2019	Social rewards for warriors is positively associated with intergroup conflicts.	Supported	8	Cite Related Hypotheses More By Author