Table 5.

Parameters for the Expressive Vocabulary Test–Second Edition (EVT-2) model.

EVT-2 raw score model effects	Model 1
	Est	SE	p <
EVT-2 model for the means
Intercept	50.234	28.703	.080
Linear age slope (0 = 10 years)	2.549	1.931	.187
Leiter IQ (0 = 52)	1.691	0.367	.001
Leiter IQ by linear	0.076	0.038	.042
Maternal commenting rate model for the means
Intercept (0 = 3.5)	0.973	0.286	.001
Linear age slope (0 = 12 years)	0.380	0.060	.001
EVT-2 model for the variance
Random intercept variance	186.644	57.931	.001
Linear age slope variance	0.164	1.480	.912
Intercept–age slope covariance	2.535	6.331	.689
Residual variance	53.007	23.007	.021
Maternal commenting rate model for the variance
Random intercept variance	1.022	0.546	.061
Linear age slope variance	0.018	0.014	.196
Intercept–age slope covariance	−0.048	0.102	.639
Residual variance	0.939	0.370	.011
Cross-variable regressions
Commenting intercept to EVT-2 intercept	0.912	6.525	.889
Commenting age slope to EVT-2 age slope	−1.170	4.683	.706
Commenting intercept to EVT-2 age slope	0.211	0.470	.654
Commenting slope to EVT-2 intercept	17.399	60.712	.774
Within dyad
Commenting residual to EVT-2 residual	1.211	1.549	.435
Total effect
Commenting intercept to EVT-2 intercept	2.123	5.953	.721
Commenting age slope to EVT-2 age slope	−0.559	4.207	.894

Note. This table contains the parameter estimates (Est) for each of the effects in the model, as well as the standard error (SE). The probability of each effect (p) is presented with significant values in bold. Leiter = Leiter International Performance Scale.