. Author manuscript; available in PMC: 2013 Feb 1.

Published in final edited form as: J Abnorm Psychol. 2011 Oct 24;121(1):212–224. doi: 10.1037/a0025823

Table 5.

Best–Fitting Multiple Regression Equations

Variable	β		SE		Δ R²		P- value
	CLDRC	ILTS	CLDRC	ILTS	CLDRC	ILTS
PA	.513	.540	.026	.029	.547	.292	<.001
L	.266	-	.025	-	.079	-	<.001
PS/NS^a	.236	.280	.024	.031	.038	.078	<.001
PAxL	.073	-	.018	-	.007	-	<.001
PAxPS/NS	-	.074	-	.026	-	.005	<.010

Note. For CLDRC: Multiple R = .819, Adjusted R² = .670; For ILTS: Multiple R = .722, Adjusted R² = .569; CLDRC = Colorado Learning Disabilities Research Center; ITLS = International longitudinal Twin Study; PA = phoneme awareness; L = language skill; PS/NS = composite of processing speed and naming speed.

Composite of PS & NS for CLDRC; composite of NS for ILTS