. Author manuscript; available in PMC: 2018 May 1.

Published in final edited form as: Dev Sci. 2015 Dec 21;20(3):10.1111/desc.12380. doi: 10.1111/desc.12380

Table 3.

Latent Growth Models without Predictors: Parameter Estimates and Model Fit Indices

			Study 1 WRRMP Reading	Study1 WRRMP Math	Study 2 SECCYD Reading	Study 2 SECCYD Math
Intercept		Mean (SE)	420.30(1.26)^***	503.24(.50)^***	468.15(.47)^***	469.91(.47)^***
		Variance (SE)	1011.70(59.20)^***	145.38 (10.44)^***	187.53(11.81)^***	187.68(10.43)^***
Slope		Mean (SE)	92.41(1.19)^***	14.48 (.33)^***	40.14(.32)^***	40.32(.36)^***
		Variance (SE)	813.59(53.43)^***	22.16 (11.06)^*	29.06 (12.78)^*	53.70(7.04)^***
Intercept-Slope correlation			−.92^***	−.25	−.46^***	−.66^***
Residuals	E1	Variance (SE)	157.81 (21.48)^***	16.04(6.01)**	54.064 (9.05)^***	48.054(2.55)^***
	E2	Variance (SE)	149.10(10.89)^***	13.44(2.41)^***	17.28 (2.45)^***	48.054(2.55)^***
	E3	Variance (SE)	101.15(6.22)^***	40.51(4.64)^***	18.75(3.53)^***	26.11(3.19)^***
	E4	Variance (SE)	23.23(1.39)^***	--	--	--
	E5	Variance (SE)	13.82(1.07)^***	--	--	--
	E6	Variance (SE)	15.36(1.26)^***	--	--	--
Model Fit Indices		χ² (df)	472.70 (24)	.00(0)	.00(0)	17.48(1)
		RMSEA	.15	.00	.00	.11
		CFI	.95	1.00	1.00	.99

Note. df = degrees of freedom; RMSEA = root mean square error of approximation; CFI = comparative fit index.

p < .05;

^***

p < .001