Table 1.

Results of regression analyses testing Gene × Environment interaction effects on emotional problems at age 12 years (Panel A) and on within-individual change in emotional problems between ages 5 and 12 years (Panel B).

	Panel A: Emotional problems (age 12 years)				Panel B: Change in emotional problems (ages 5-12 years)
Predictor variables	b	se	t	p	b	se	t	p
Genetic and environmental main effects
5-HTTLPR	.38	.31	1.23	.218	.49	.35	1.40	.160
Occasional bullying	1.60	.38	4.20	<.001	1.47	.46	3.23	.001
Frequent bullying	5.56	.82	6.76	<.001	4.09	.77	5.28	<.001
Gene × Environment interactions
5-HTTLPR × Occasional bullying	.30	.54	0.55	0.582	-.44	.66	-.66	.508
5-HTTLPR × Frequent bullying	2.33	1.23	1.89	0.059	2.90	1.17	2.48	.013

Note: 5-HTTLPR = serotonin transporter linked polymorphic region