Table 4 Results of our ERGMs.

Coefficients are analogous to logistic regression coefficients (log-odds change per unit increase in the associated predictor). SEs of the estimates are in parentheses. *P ≤ 0.05, **P ≤ 0.01, ***P ≤ 0.001.

Binary edgesValued edges
Land-tenure and kinship hypotheses
Relatedness2.22 (2.09)0.25 (0.68)
Spatial overlap1.44 (1.09)0.88* (0.37)
Male receiving1.02 (0.65)0.42** (0.16)
Male sharing−0.67 (0.47)−0.68** (0.26)
Social behavior hypotheses
Direct reciprocity2.04* (0.83)0.78* (0.31)
Hierarchical reciprocity (transitivity)0.91* (0.46)0.28* (0.14)
Generalized reciprocity (cyclicality)−0.18 (0.36)−0.09 (0.14)
Basic network attributes
Density−4.02*** (0.91)0.48* (0.22)
Any shares−4.42*** (0.42)
Even-distribution receiving2.59. (1.52)
Even-distribution sharing−0.45 (0.97)