Table 4.

Correlations among key study variables for females (above the diagonal) and males (below the diagonal).

Measures	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15
1 Mother's education	1.00	–0.02	0.14*	0.05	0.01	–0.16*	0.20*	0.05	0.08	–0.02	–0.03	0.10*	0.14*	0.13*	0.08
2 Social ability 12	–0.21*	1.00	–0.03	–0.09	–0.07	0.04	–0.01	–0.00	–0.01	0.03	0.04	–0.06	–0.05	–0.14*	–0.10
3 CPA 12	0.20*	–0.06	1.00	–0.02	0.05	–0.17*	0.55	–0.07	0.07	0.02	0.02	0.18*	0.15	0.23	0.10
4 Diff. making friends 18	0.01	–0.07	–0.06	1.00	0.04	–0.12*	0.08	–0.11*	–0.13*	–0.31*	–0.23*	–0.25*	–0.23*	–0.16*	–0.22*
5 Family conflict 18	–0.01	–0.02	0.04	–0.02	1.00	–0.17*	0.14*	–0.10*	0.01	0.04	–0.10*	0.08	–0.04	0.11	0.00
6 Other problem behavior 18	0.00	–0.11	–0.01	0.06	–0.09*	1.00	–0.25*	0.34*	0.08	0.04	0.37*	0.11	0.17*	–0.00	0.16*
7 CPA 18	0.24*	–0.07	0.58*	0.03	0.10*	–0.09	1.00	–0.18*	0.06	–0.02	–0.13*	0.03	–0.03	0.12	–0.11
8 Other drug use 18	0.02	–0.02	0.02	–0.05	–0.11*	0.26*	–15*	1.00	–0.01	0.03	0.43*	0.24*	0.30*	0.16*	0.29*
9 Sport activity 18	0.13*	–0.05	0.11*	–0.05	0.10*	0.07	0.18*	–0.03	1.00	0.15*	0.09	0.12*	0.14*	0.10	0.15*
10 Imp. of making friends 18	0.09	0.01	0.17*	–0.20*	0.04	0.11*	0.08	0.05	0.14*	1.00	0.14*	0.12	0.10*	0.20*	0.13*
11 Alcohol use 18	0.04	–0.05	0.07	–0.12*	–0.05	0.28*	–0.04	0.11*	0.01	0.17*	1.00	0.41*	0.47*	0.26*	0.37*
12 General alcohol	0.13*	–0.01	0.16*	0.05	0.07	0.13	0.11*	0.22*	0.16*	0.14*	0.46*	1.00	0.82*	0.49*	0.43*
13 Heavy alcohol use 21	0.11*	–0.02	0.10*	–0.08	–0.04	0.17*	0.06	0.25*	0.14*	0.18*	0.50*	0.80*	1.00	0.44*	0.50*
14 General alcohol use 28	0.09*	–0.03	0.11*	0.02	–0.14*	0.13*	0.13*	0.10*	0.14*	0.20*	0.18*	0.35*	0.31*	1.00	0.64*
15 Heavy alcohol use 28	0.06	0.03	0.04	0.02	–0.19*	0.23*	0.02	0.23*	0.08	0.18*	0.27*	0.37*	0.45*	0.64*	1.00

^*P < 0.05; 12 = age 12; 18 = age 18; 21 = age 21; 28 = age 28. GPA: grade point average.