Table 3.

Analysis of main effects of specific environmental factors on outcome variables (n = 708)

	Change in implicit self-esteema			Change in positive affectb			Change in negative affectb
	b	p	95% CI	b	p	95% CI	b	p	95% CI
Birth weight	.000	.995	− .000 to .000	− .002	.581	− .010 to .006	.007	.156	− .004 to .016
Childhood trauma	.002	.440	− .002 to .006	.132	.498	− .249 to .513	− .080	.727	− .526 to .366
Bullying severity	.001	.845	− .007 to .009	− .026	.944	− .736 to .685	.836	.050	− .001 to 1.67
Bullying frequency	.007	.201	− .004 to .017	.210	.657	− .715 to 1.13	.847	.127	− .242 to 1.94
Subjective social status	.002	.016	.000 to .003	.114	.046	− .002 to .227	− .004	.648	− .136 to .128

n indicates the number of individual twins, Missing values on change scores ^an = 63; ^bn = 52