Table 5.

Univariate Results

	−2LL	df	AIC	Δχ2	Δdf	p
MT
ACTE	8946.03	3221	2504.03
ACE	8949.09	3223	2503.09	3.06	2	.22
ATE	8950.07	3223	2504.07	4.04	2	.13
CTE	8946.09	3223	2500.09	.06	2	.97
AE	8951.40	3225	2501.40	5.37	4	.25
CE	8951.78	3225	2501.78	5.75	4	.22
TE	8972.20	3225	2522.20	26.17	4	< .01
E	9024.62	3227	2570.62	78.59	6	< .01
PMT
ACTE	5532.52	3120	−707.48
ACE	5534.91	3122	−709.09	2.39	2	.30
ATE	5536.75	3122	−707.25	4.23	2	.12
CTE	5532.58	3122	−711.42	.06	2	.97
AE	5537.11	3124	−710.90	4.59	4	.33
CE	5537.13	3124	−710.87	4.61	4	.33
TE	5566.82	3124	−681.18	34.30	4	< .01
E	5605.82	3126	−646.18	73.30	6	< .01
Neglect
ACTE	7065.58	3189	687.58
ACE	7066.39	3191	684.39	.81	2	.67
ATE	7066.40	3191	684.40	.82	2	.66
CTE	7067.47	3191	685.47	1.89	2	.39
AE	7067.00	3193	681.00	1.42	4	.84
CE	7070.48	3193	684.48	4.90	4	.30
TE	7081.91	3193	695.91	16.33	4	< .01
E	7110.06	3195	720.06	44.48	6	< .01
SMT
ACTE	1259.47	3154	−5084.54
ACE	1259.48	3155	−5050.52	.01	1	.92
ATE	1260.79	3155	−5049.21	1.32	1	.25
CTE	1259.47	3155	−5050.54	.00	1	1.00
AE	1260.82	3156	−5051.18	1.35	2	.51
CE	1259.48	3156	−5052.50	.01	2	.51
TE	1262.22	3156	−5049.78	2.75	2	.25
E	1265.27	3157	−5048.74	5.80	3	.12

Note. Heterogeneity models are shown for MT, PMT, and Neglect. The homogeneity model is shown for SMT. −2LL = −2 log likelihood; df = degrees of freedom; AIC = Akaike’s information criterion; Δχ² = difference in chi square from ACTE model; p = probability. MT = composite maltreatment; PMT = physical maltreatment; SMT = sexual maltreatment. A = additive genetic influences; C = shared environmental influences; T = twin environmental influences; E = nonshared environmental influences.