Table 5. Changes in p-value for each predictor when altering concomitant predictors using total brain as dependent variable.

Read as follows: the focal predictor in the first column was estimated to a lowest p-value (out of all the 32 models the focal predictor where included in) shown in the second column when using concomitant predictors shown in column three. Likewise, the maximum p-value shown in column four, were estimated using concomitant predictors in column five. N = 40.

Focal predictor	Min p-value	Concomitant predictors	Max p-value	Concomitant predictors
Male group size	0.082	Female group size, Lifespan, Female sexual maturity, Innovation, Fruit	0.968	Lifespan
Female group size	0.017	Male group size, Lifespan, Female sexual maturity, Innovation, Fruit	0.540	Female sexual maturity, Innovation
Life span	0.004	Male group size, Female group size, Life span, Innovation	0.263	Female group size, Innovation, Fruit
Female sexual maturity	0.043	Male group size, Female group size, Life span, Innovation	0.263	Female group size, Innovation, Fruit
Innovation	0.240	Fruit	0.865	Male group size, Life span
Fruit	0.007	Male group size, Female group size, Lifespan	0.061	Male group size, Female sexual maturity