Table 6.

Comparative Fit of Models with Different Covariance Structures for Family Effects over Time on Child Externalizing Behavior

	Stable		Dynamic
	Intercept	Intercept + Slope	CS	AR
Parameters	8	10	9	9
Model 1: Includes Age Trends Only
−2LL	4850.2	4845.0	4847.6	4825.9
AIC	4866.2	4865.0	4865.6	4843.9
BIC	4895.3	4901.3	4898.3	4876.6
Model 2: Includes Age and Child- and Family-Level Predictors
−2LL	4753.5	4748.9	4752.0	4736.5
AIC	4769.5	4768.9	4770.0	4754.5
BIC	4798.6	4805.2	4802.7	4787.2

Note: Parameters refers to the number of unique variance/covariance parameters estimated in the model, −2LL is the log-likelihood of the model multiplied by a factor of −2 (i.e., the model deviance), AIC is Akaike’s Information Criterion, BIC is Bayes’ Information Criterion. Bolded entries indicate best fit. Covariance structures were specified as defined in Table 1: CS = compound symmetric, AR = first-order autoregressive.