Table 2.

Variable	B	SE(B)	β	t-value	p-value
Step 1
Pretest Cortisol	−0.10	0.03	−0.37	−3.85	0.00
Med Count	−0.00	0.02	−0.01	−0.14	0.89
Male	0.00	0.02	0.02	0.22	0.83
Time Since Wake	−0.00	0.00	−0.31	−3.26	0.00
Age Group	0.02	0.02	0.11	1.06	0.29
Condition	0.03	0.02	0.15	1.66	0.099
Step 2
Pretest Cortisol	−0.10	0.03	−0.40	−4.17	0.00
Med Count	0.00	0.02	0.02	0.23	0.82
Male	0.00	0.02	0.03	0.32	0.75
Time Since Wake	−0.00	0.00	−0.33	−3.53	0.00
Age Group	0.02	0.02	0.11	1.12	0.27
Condition	0.02	0.02	0.14	1.64	0.10
Age × Condition	0.03	0.02	0.21	2.33	0.02

Note. N = 109. Hierarchical linear regression results with cortisol reactivity (Mplus-generated) as the dependent variable. Age group was coded as −1 = 9–10 year olds, 1 = 15–16 year olds. Condition was coded as −1 = parent, 1 = friend.