Table 4.

Regression Models Predicting Comprehension (PPVT) at 36 Months from Birth Status and 12-Month Measures of Information Processing and Language

			Cumulative	Final Equation
Set / Measure		ΔR2	R2	sr2	β	t
Model 1: Birth status + Infant information processing
Control		.028*	.028*
	Birth Status			.007	.090	1.16
Infant Information Processing		.308***	.336***
	Recognition - Rose			.060	.260	3.39**
	Recognition - Fagan			.001	−.011	−.15
	Delayed Recognition			.005	.071	.95
	Recall			.047	.259	3.02**
	Cross-Modal			.116	.364	4.73***
	Symbolic Play			.006	−.094	−1.11
	Object Permanence			.009	.108	1.33
Model 2: Birth status + Infant Language
Control		.028*	.028*
	Birth Status			.011	.112	1.48
Infant Language		.262***	.290***
	Comprehension			.095	.361	4.22***
	Production			.039	.226	2.69**
	Gesture			.001	.026	.30
Model 3: Birth status + Infant Language + Infant Information Processing
Control		.028*	.028*
	Birth Status			.008	.094	4.29
Infant Language		.262***	.290***
	Comprehension			.050	.281	3.33***
	Production			.010	.121	1.52
	Gesture			.001	.043	.53
Infant Information Processing		.147***	.436***
	Recognition - Rose			.044	.227	3.14**
	Recognition - Fagan			.003	−.059	−.81
	Delayed Recognition			.003	.053	.75
	Recall			.018	.167	2.02*
	Cross-Modal			.070	.292	3.95***
	Symbolic Play			.014	−.145	−1.79
	Object Permanence			.004	.068	.89

^*p ≤ 0.05.

^**p ≤ 0.01.

^***p ≤ 0.001.