Table 2.

Averaged model coefficients based on DIC weights (Table 1)

Coefficient	Posterior mean	Lower 95% CI	Upper 95% CI
Baseline	0.303	0.230	0.375
RS type = fertility	0.247	0.180	0.321
RS type = mating success	0.200	0.128	0.266
RS type = offspring mortality	0.084	0.010	0.158
RS type = wife quality	−0.003	−0.086	0.076
Polygyny = absent	0.190	0.111	0.264
RS type = fertility, polygyny = absent	0.254	0.169	0.342
RS type = mating success, polygyny = absent	0.133	0.063	0.208
RS type = offspring mortality, polygyny = absent	0.012	−0.088	0.105
RS type = wife quality, polygyny = absent	0.146	0.067	0.227
Age control = no	0.302	0.229	0.378
Subsistence = horticulture	0.301	0.230	0.375
Subsistence = pastoralism	0.308	0.234	0.380
Subsistence = agriculture	0.305	0.235	0.380
Status = hunting ability	0.304	0.232	0.377
Status = political influence	0.304	0.232	0.377
Status = wealth	0.304	0.233	0.378

The baseline level refers to RS type = surviving offspring, subsistence = foraging, status = formidability, polygyny = present, age control = yes, and other coefficients represent deviations from this baseline as indicated. All effect sizes were coded such that positive signs indicate positive contributions to RS (e.g., a negative effect of status on offspring mortality was coded as positive). Though there is substantial variation according to RS type and polygyny (Fig. 1), effect sizes are largely the same for different subsistence types or different status types.