Table 5:

Variance Decomposition of Externalizing Psychopathology and the Growth Model

Parameter	Sample	Proportion of variance	[95% CI]	LRT	p
Externalizing A2	MN	.54	[.30, .74]	28.8	8.1× 10−8
	CO	.45	[.17, .76]	15.1	1.0× 10−4
Externalizing C2	MN	.20	[.04, .41]	5.1	.02
	CO	.33	[.04, .57]	6.7	.01
Externalizing E2	MN	.26	[.17, .34]	42.4	7.3× 10−11
	CO	.23	[.14, .32]	30.3	3.6× 10−8
Intercept A2	MN	.57	[.37, .79]	66.3	3.8× 10−16
	CO	.42	[.14, .73]	14.4	1.0× 10−4
Intercept C2	MN	.31	[.09, .48]	10.1	.001
	CO	.47	[.17, .73]	12.1	5.0× 10−4
Intercept E2	MN	.13	[.08, .19]	90.1	2.3× 10−21
	CO	.11	[.04, .21]	12.8	3.0 × 10−4
Slope A2	MN	.82	[.72, .88]	97.5	5.3× 10−23
	CO	.22	[.01, .66]	3.9	.049
Slope C2	MN	0	[0, .06]	.003	.96
	CO	.55	[.14, .83]	8.9	.003
Slope E2	MN	.18	[.11, .25]	59.7	1.1× 10−14
	CO	.23	[.07, .45]	10.5	.001

Note: Parameter significance was obtained by estimating a base model in which all parameters were free to vary, then setting each parameter in turn to 0 and comparing the constrained model to the base model. LRT = Likelihood Ratio Test. All tests were 1 degree of freedom tests. 95% CI refers to the 95% confidence interval around the estimate.