Table 2.

Correlation Matrix of Key Study Variables

	Variable	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15
1.	Sex_In T2	—
2.	Sex_In T1	.64***	—
3.	Corsi (WM)	−.10	−.04	—
4.	L2bc (WM)	−.12*	−.07	.23***	—
5.	Ob2bc (WM)	−.01	.09	.29***	.52***	—
6.	Dgtsp (WM)	−.16**	−.13*	.19***	.22***	.16**	—
7.	Swm (WM)	−.07	.02	.34***	.33***	.31***	.26***	—
8.	SS	.20***	.17**	.08	.01	.08	.14*	.14*	—
9.	AWT	.29***	.23***	−.17**	−.14**	−.09	−.07	−.05	.35***	—
10.	TD	.17**	.12*	−.08	−.13*	−.10	−.07	−.09	.03	.16**	—
11.	Pubertal dev.	.26***	.26***	.07	.05	.12*	.06	.05	.12*	.21***	.12*	—
12.	Female	−.04	−.05	−.08	−.01	−.09	.04	−.01	−.13*	−.05	−.04	.19***	—
13.	Age	.31***	.24***	.12*	.03	.10	−.01	.03	.08	.20***	.05	.42***	−.05	—
14.	SEB	−.12*	−.09	.07	.14*	.15**	.16**	.004	.02	−.18***	−.18***	−.12*	.03	−.04	—
15.	Black identity	.17***	.20***	−.23***	−.07	−.05	−.04	−.15**	.02	.22***	.17**	.20***	.15**	.03	−.06	—

Note. Sex_In T2 = Sexual initiation at follow-up; Sex_In T1 = Sexual initiation at baseline; Corsi (WM) = Corsi block tapping score, working memory item; L2bc (WM) = Letter two-back score, working memory item; Ob2bc (WM) = Object two-back score, working memory item; Dgtsp (WM) = Digit span score, working memory item; Swm (WM) = Spatial working memory score, working memory item; SS = Sensation-seeking score, average of four items; AWT = Acting-without-thinking score, average of nine items; Pubertal dev. = Pubertal development; TD = Temporal discounting score; SEB = Socioeconomic background.

^*p < .05.

^**p < .01.

^***p < .001.