An evolutionary agent-based model of pre-state warfare patterns: cross-cultural tests

Threat of natural disasters will be negatively associated with frequency of warfare in state societies (32-35)

Using a sample of unpacified cultures the correlation is in the same direction and stronger (?= -0.77, p=0.02)

Test
Test Name	Support	Significance	Coefficient	Tail
Spearman’s rank-order correlation	Supported	p=0.004	?= -0.66	`UNKNOWN`

Variables
Variable Name	Variable Type	OCM Term(s)
State Societies	Combined	Territorial Hierarchy
Threat Of Natural Disaster	Independent	Disasters
Warfare, Frequency Of	Dependent	Ingroup Antagonisms, Instigation Of War, Warfare

Main Author	Published Year	Hypothesis	Supported	Variables Tested
Korotayev, Andrey V.	2008	Threat of natural disasters will be negatively related to warfare frequency in state societies	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.	2018	Adding three additional variables-little formalized leadership, natural disasters, and state-level organization- to the eastern African comparison would lead to a replication of the Ember et al. (1992) findings.	Supported	11	Cite Related Hypotheses More By Author
Ember, Carol R.	2012	Resource scarcity will be negatively associated with warfare frequency in state societies (37).	Supported	2	Cite Related Hypotheses More By Author
Ember, Carol R.	2018	There will be an inverse relationship between political participation and committing atrocities.	Supported	12	Cite Related Hypotheses More By Author