Table 2.

Basic summary of familial correlations and their confidence intervals for neuroticism

	N Complete pairs	Correlation	95 CI	Average age
MZ twins	2984	.523	.499–.545	30.1
DZ twins	3121	.216	.182–.248	27.2
Siblings	596	.198	.120–.271	38.3
Father-twin1	3580	.143	.111–.174	53.5/23.6 (father/twin)
Mother-twin2	4232	.163	.133–.191	51.6/23.6 (mother/twin)
Parents of twins	3847	.162	.131–.192	53.3/51.4 (father/mother)
Twin-spouse	1845	.053	.007–.098	34.6/35.6 (twin/spouse)