Understanding ethnolinguistic differences: The roles of geography and trade

Post-1500 ethnic groups residing in land with high-productive variation will have less inter-ethnic conflict.

Test
Test Name	Support	Significance	Coefficient	Tail
Multiple regression	Supported	p<.05	b= -.502 to -.578	`UNKNOWN`

Variables
Variable Name	Variable Type	OCM Term(s)
Inter-ethnic conflict	Dependent	Instigation Of War, Warfare
Land productivity variation	Independent	Climate, Land Use, Production And Supply

Main Author	Published Year	Hypothesis	Supported	Variables Tested
Dickens, Andrew	2021	Post-1500 ethnic groups residing in land with high-productive variation will have increased inter-ethnic trade for subsistence and food.	Supported	2	Cite Related Hypotheses More By Author
Dickens, Andrew	2021	Post-1500 ethnic groups residing in land with high-productive variation will have increased exogamous inter-ethnic marriage.	Supported	2	Cite Related Hypotheses More By Author
Dickens, Andrew	2021	High land productivity variation will be associated with less language difference between neighboring ethnic groups.	Supported	2	Cite Related Hypotheses More By Author
Gershman, Boris	2023	Headhunting developed as a cultural response to frequent inter-tribal conflict and warfare.	Supported	2	Cite Related Hypotheses More By Author
Cashdan, Elizabeth	2001	Greater ethnic diversity will be found in regions with greater pathogen stress and reduced climatic variation and unpredictability (975).	Supported	3	Cite Related Hypotheses More By Author