Table 4.

Twin-sibling correlations and their 95% confidence intervals for the YSR syndrome and broadband scales at the mean age of 16.47

	MZM	DZM/twin-brother	MZF	DZF/twin-sister	DOS/brother-sister
Anxious/depressed	.54 (.46–.61)	.23 (.11–.33)	.43 (.37–.48)	.26 (.21–.32)	.21 (.15–.26)
Withdrawn/depressed	.41 (.32–.48)	.10 (.00–.19)	.43 (.37–.49)	.20 (.37–.49)	.18 (.13–.23)
Somatic complaints	.45 (.33–.54)	.14 (.00–.28)	.41 (.34–.47)	.19 (.13–.24)	.12 (.06–.18)
Social problems	.43 (.35–.51)	.09 (.00–.16)	.47 (.41–.53)	.18 (.09–.26)	.19 (.14–.23)
Thought problems	.39 (.30–.47)	.14 (.00–.21)	.57 (.52–.62)	.22 (.15–.28)	.17 (.11–.22)
Attention problems	.50 (.43–.56)	.12 (.02–.20)	.52 (.46–.57)	.28 (.21–.34)	.15 (.09–.20)
Rule-breaking behavior	.49 (.42–.55)	.25 (.19–.32)	.53 (.47–.58)	.33 (.26–.39)	.16 (.11–.21)
Aggressive behavior	.51 (.45–.57)	.16 (.10–.22)	.57 (.51–.62)	.26 (.19–.33)	.23 (.17–.27)
Internalizing	.57 (.50–.64)	.28 (.17–.38)	.48 (.42–.53)	.28 (.22–.34)	.22 (.16–.27)
Externalizing	.53 (.46–.58)	.21 (.15–.27)	.60 (.54–.64)	.32 (.25–.38)	.22 (.18–.28)