The evolution of war:  a cross-cultural study

"The higher the level of political centralization, the more likely that villages will be fortified" (59)

Test
Test Name	Support	Significance	Coefficient	Tail
Phi coefficient	Supported	p<.01	.46	Two-tailed

Variables
Variable Name	Variable Type	OCM Term(s)
Centralization Of Political System	`UNKNOWN`	Territorial Hierarchy
Fortified Villages	`UNKNOWN`	Military Installations

Main Author	Published Year	Hypothesis	Supported	Variables Tested
Osafo-Kwaako, Philip	2013	Political centralization predicts increases in public goods and development outcomes.	Supported	3	Cite Related Hypotheses More By Author
Martin, M. Kay	1975	Horticultural subsistence activity will be negatively associated with political centralization (218).	No support claimed	3	Cite Related Hypotheses More By Author
Peregrine, Peter N.	1991	Advances in craft specialization are positively associated with political centralization (1).	Supported	2	Cite Related Hypotheses More By Author
Osafo-Kwaako, Philip	2013	Political centralization will be predicted by population density, frequency of being attacked, and trade in the worldwide sample, but not in the Africa sub-sample.	Supported	5	Cite Related Hypotheses More By Author
Osafo-Kwaako, Philip	2013	Agricultural potential may predict population density, which in turn could predict political centralization in the world sample, but not in the African sample.	Supported	3	Cite Related Hypotheses More By Author