The evolution of war:  a cross-cultural study

"The higher the level of political centralization, the more likely that cavalry is used" (55)

Test
Test Name	Support	Significance	Coefficient	Tail
Phi coefficient	Not Supported	above .10	.16	Two-tailed

Variables
Variable Name	Variable Type	OCM Term(s)
Cavalry	`UNKNOWN`	Ground Combat Forces
Centralization Of Political System	`UNKNOWN`	Territorial Hierarchy

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