Table 3.

Effects of Peer Rejection and ADHD on Changes in Adjustment

Dependent variable: Follow-up externalizing behavior
Variable	Total R2	R2 change	B	S.E.B	β
1. Baseline externalizing behavior	.31	31***	.40	.07	.56
2. Childhood peer rejection	.32	.00	−.04	.15	−.05
3. Childhood ADHD diagnosis	.32	.01	.14	.12	.11
4. Interaction between 2 and 3	.32	.00	−.07	.16	−.07
Dependent variable: Follow-up internalizing behavior
Variable	Total R2	R2 change	B	S.E.B	β
1. Baseline internalizing behavior	.29	29***	.42	.05	.54
2. Childhood peer rejection	.29	.00	−.01	.06	−.01
3. Childhood ADHD diagnosis	.29	.00	.02	.09	.02
4. Interaction between 2 and 3	.29	.00	.11	.16	.11
Dependent variable: Follow-up academic achievement
Variable	Total R2	R2 change	B	S.E.B	β
1. Baseline academic achievement	.67	67***	.83	.04	.82
2. Childhood peer rejection	.69	.02**	−.2.43	.78	−.13
3. Childhood ADHD diagnosis	.70	.02**	−4.87	1.39	−.17
4. Interaction between 2 and 3	.71	.00	−2.21	2.46	−.09

^*p<.05;

^**p<.01;

^***p<.001

R² change effect size conventions: .01 = small, .06 = medium, .14 = large (Cohen et al., 2003)