Table 6.

Variance Components from Best-Fitting Reduced 2-Factor Model for respiratory sinus arrhythmia (RSA), heart rate (HR1 at rest 1, HR2 at rest 2) skin conductance level (SCL) and non-specific skin conductance response (NS-SCR)

	Ac (F1)	Ac (F2)	As	A (total)	Cc (F1)	Cc (F2)	Cs	C (total)	Ec (F1)	Ec (F2)	Es	E (total)
Males
RSA	–	0.10	0.27	0.37	–	0.08	–	0.08	–	0.18	0.37	0.55
HR1	0.02	0.22	–	0.24	0.02	0.19	–	0.21	0.03	0.41	0.12	0.56
HR2	0.01	0.19	–	0.20	0.01	0.16	–	0.17	0.02	0.36	0.23	0.61
SCL	0.12	0.01	0.15	0.28	0.13	0.01	0.10	0.24	0.21	0.02	0.25	0.48
NS-SCR	0.18	0.02	–	0.20	0.20	0.01	–	0.21	0.32	0.03	0.24	0.59
Females
RSA	–	0.13	0.14	0.27	–	0.06	–	0.06	–	0.18	0.49	0.67
HR1	0.02	0.33	–	0.35	0.02	0.17	–	0.19	0.01	0.45	0.01	0.47
HR2	0.01	0.24	–	0.25	0.01	0.12	–	0.13	0.01	0.33	0.27	0.61
SCL	0.15	–	0.19	0.34	0.20	–	0.12	0.32	0.14	–	0.20	0.34
NS-SCR	0.22	–	–	0.22	0.30	–	–	0.30	0.20	–	0.27	0.47

F1 Sympathetic Factor, F2 Parasympathetic Factor, Ac common genetic, Cc common shared environment, Ec common non-shared environment, As specific genetic, Cs specific shared environment, Es specific non-shared environment. Parameters that were set to zero in the final model are indicated by dashed lines. The sum of A (total), C (total), and E (total) may sum to slightly more or less than 1.0 due to rounding of decimals