Table 1.

Phylogenetic least-squares (PGLS) regressions examining the effects of five behavioural-ecological variables on endocranial volume. (*=significant at the α < 0.05 level; **=significant at the α < 0.01 level; ***=significant at the α < 0.001 level.)

	dataset 1 (n = 144)		dataset 2 (n = 104)
predictor	t137	p	t97	p
intercept	−5.5	<0.001***	11.3	<0.001***
body size	18.6	<0.001***	13.3	<0.001***
activity period	2.5	<0.05*	1.9	0.06
terrestriality	0.4	0.69	−0.3	0.8
folivory	−1.7	0.08	0.1	0.9
group size	1.7	0.1	0.1	0.9
home range size	2.4	<0.05*	2.8	<0.01**
model summary:
λ	0.988		0.997
R2	0.8		0.75