Duration of agriculture and distance from the steppe predict the evolution of large-scale human societies in Afro-Eurasia
Humanities and Social Sciences Communications • Vol/Iss. 7(1) • Nature Portfolio • • Published In • Pages: 1-8 •
By Currie, Thomas E., Turchin, Peter, Turner, Edward, Gavrilets, Sergey
Hypothesis
Agricultural productivity predicts greater imperial density.
Note
See Table 1 for Pearson's r and Spearman's ρ.
| Test Name | Support | Significance | Coefficient | Tail |
|---|---|---|---|---|
| Generalized Least Squares (GLS) regression | Not Supported | n.s | r = 0.01 | UNKNOWN |
| Variable Name | Variable Type | OCM Term(s) |
|---|---|---|
| Duration of agriculture | Independent | Agriculture |
| Imperial Density | Dependent | Population |