TABLE IV.

Bivariate Longitudinal Model-Fitting Results for Reactive and Proactive Aggression, at Ages 9–10 and 11–14 Years

		Overall fit					Model difference test
Model no.		−2LL	DF	AIC	BIC	Compared to model no.	Δχ2	Δdf	P
Reactive aggression
1a	Saturated model	5,372.83	2,043	1,286.83	−3,889.75
1b	Cholesky	5,437.94	2,091	1,255.94	−4,011.70	1a	65.11	48	.051
1c	Cholesky: equate parameters in males and females	5,445.84	2,100	1,245.84	−4,036.72	1a	73.01	57	.08
Proactive aggression
2a	Saturated model	5,523.78	2,043	1,437.78	−3,814.27
2b	Cholesky	5,576.52	2,091	1,394.52	−3,942.41	2a	52.74	48	.30
2c	Cholesky: equate parameters in males and females	5,596.74	2,100	1,396.74	−3,961.27	2a	72.96	57	.08

−2LL, −2(log-likelihood); AIC, Akaike’s Information Criterion; BIC, Bayesian Information Criterion.