Table S4.

Heritability for lobe and sulcal dimensions (after Procrustes superimposition)

Variable	Heritability	SE	P value	Significant covariates	Var
Chimpanzee
Superior frontal length (SF)	0.49	0.14	<0.001	Scan	0.05
Inferior frontal length (IF)	0.64	0.17	<0.001	Age, sex*age, size	0.05
Temporal length (T)	0.58	0.17	<0.001	Size	0.02
Superior parietal length (SP)	0.63	0.13	<0.001	Sex	0.04
Inferior parietal length (IP)	0.77	0.13	<0.001
Occipital length (O)	0.52	0.16	<0.001	Sex, size	0.13
Fronto-orbital sulcus (FOS)	0.35	0.15	0.004
Precentral sulcus (PCS)	0.24	0.19	0.089
Central sulcus (CS)	0.59	0.15	<0.001	Size, colony	0.07
Sylvian fissure (SyF)	0.45	0.13	<0.001	Colony	0.03
Superior temporal sulcus (STS)	0.42	0.18	0.007
Lunate sulcus (LS)	0.34	0.16	0.009	Scan	0.13
Human
Superior frontal length (SF)	0.25	0.18	0.088
Inferior frontal length (IF)	0.38	0.15	0.009	Sex	0.03
Temporal length (T)	0.65	0.11	<0.001	Sex	0.01
Superior parietal length (SP)	0.43	0.14	0.003	Size	0.01
Inferior parietal length (IP)	0.53	0.13	<0.001	Sex, age	0.07
Occipital length (O)	0.65	0.14	<0.001
Latero-orbital sulcus (LOS)	0.10	0.14	0.241	Age	0.02
Precentral sulcus (PCS)	0.07	0.16	0.328	Sex, size	0.06
Central sulcus (CS)	0.58	0.10	<0.001	Size	0.07
Sylvian fissure (SyF)	0.51	0.12	<0.001	Sex*age, size	0.04
Superior temporal sulcus (STS)	0.14	0.14	0.151
Parieto-occipital sulcus (POS)	0.19	0.18	0.132

Sex*age, interaction between age and sex; Var, proportion of variance explained by significant covariates.