Table 2.

Zero-order correlations among study variables

	GABRA2	Ancestry	Gender	T1 age	FHD	IMP (A)	SS (A)	IMP (M)	SS (M)	IMP (F)	SS (F)	T1 HI (A)	T1 CP (A)	T1 ALC (A)	T2 HI (A)	T2 CP (A)	T2 ALC (A)
GABRA2	1
Ancestry	–0.03	1
Gender	–0.03	–0.09	1
T1 age	–0.03	–0.004	–0.07	1
FHD	–0.09	–0.05	–0.05	–0.05	1
IMP (A)	–0.06	–0.08	0.09	0.13*	0.09	1
SS (A)	–0.11†	–0.06	0.02	0.16**	0.08	0.55**	1
IMP (M)	–0.14*	0.1	0.12†	–0.04	0.24**	0.38**	0.14*	1
SS (M)	–0.19**	0.03	0.09	–0.04	0.21**	0.26**	0.23**	0.55**	1
IMP (D)	–0.11	0.09	0.1	–0.06	0.16*	0.33**	0.11†	0.47**	0.25**	1
SS (D)	–0.02	0.13*	0	–0.1	0.05	0.11	0.11	0.21**	0.32**	0.46**	1
T1 HI (A)	–0.04	0.01	–0.09	0.16**	0.13*	0.47**	0.25**	0.34**	0.19**	0.24**	0.11†	1
T1 CP (A)	–0.01	0	–0.11†	0.23**	0.15*	0.51**	0.28**	0.33**	0.18**	0.28**	0.13*	0.55**	1
T1 ALC (A)	–0.06	0.004	–0.08	0.17**	0.05	0.18**	0.15*	0.15*	0.01	0.08	0.04	0.19**	0.31**	1
T2 HI (A)	–0.05	–0.11†	–0.12*	0.10†	0.22**	0.40**	0.17**	0.34**	0.20**	0.19**	–0.01	0.58**	0.41**	0.12*	1
T2 CP (A)	–0.01	–0.05	0.07	0.17**	0.16**	0.43**	0.27**	0.33**	0.18**	0.24**	0.02	0.49**	0.60**	0.18**	0.61**	1
T2 ALC (A)	0.01	–0.01	–0.11†	0.24**	0.15*	0.22**	0.25**	0.25**	0.26**	0.15*	0.14*	0.29**	0.35**	0.63**	0.26**	0.41**	1

Parentheses after variables refer to the reporter. A adolescent report, M mother report, F father report

T1 time 1, T2 time 2, FHD family history density of substance use disorder, IMP impulsivity, SS sensation seeking, HI hyperactive–inattentive symptoms, CP conduct problems, ALC alcohol problems

^†p ≤ 0.10

^*p ≤ 0.05

^**p ≤ 0.01, N = 292