Statistical evidence for an ecological explaination of warfare

Cross-culturally, societies with more frequent warfare will be more likely to have more severe food shortages (648).

Test
Test Name	Support	Significance	Coefficient	Tail
Mann-Whitney U-Test	Supported	p<.05	`UNKNOWN`	One-tailed

Variables
Variable Name	Variable Type	OCM Term(s)
Frequency Of Warfare	Dependent	Ingroup Antagonisms, Instigation Of War
Severity Of Food Shortages	Independent	Gratification And Control Of Hunger, Disasters

Main Author	Published Year	Hypothesis	Supported	Variables Tested
Kelly, Robert L.	2000	Food storage will be positively associated with frequency of warfare (69).	Supported	2	Cite Related Hypotheses More By Author
Kelly, Raymond C.	2000	Food storage will be positively related to frequency of warfare (69).	Supported	2	Cite Related Hypotheses More By Author
Ember, Carol R.	1997	When included in a model testing the relationship between frequency of warfare, natrual disasters, and socialization for mistrust, food producing will be a significant predictor of frequency of warfare (11).	Not Supported	4	Cite Related Hypotheses More By Author
Ember, Carol R.	1997	When included in a model testing the relationship between several variables and frequency of internal warfare, food production will be a significant predictor of internal warfare frequency (12).	Not Supported	8	Cite Related Hypotheses More By Author
Young, Frank W.	1965	"The level at which . . . organized conflict is carried on rises as one moves from food gatherers to the modern agriculturalists" (90)	Supported	2	Cite Related Hypotheses More By Author