. Author manuscript; available in PMC: 2015 Feb 1.

Published in final edited form as: Learn Individ Differ. 2013 Nov 12;30:46–57. doi: 10.1016/j.lindif.2013.11.001

Table 3a.

AIMS intercept and growth as predictors of end-of-year reading performance when controlling for beginning-of-year reading performance

Parameter	Familiar			Novel
Parameter	Typical	Struggling-NI	Struggling-I	Typical	Struggling-NI	Struggling-I
	Passage Comprehension
Posttest on
Pretest	.58	.69	.61	.47		.63
Intercept T1 (T5)	.20^a (.29^a)	.06^a (.09^a)	.17 (.25)	.41 (.53)		.23 (.33)
Slope T1 (T5)	.05^a (−.06^a)	.23 (.18^a)	.15^a (.03^a)	−.03^a (−.22^a)		.01^a (−.13^a)
Correlation
Pretest, Intercept T1 (T5)	.58 (.60)	.59 (.59)	.61 (.63)	.59 (.60)		.61 (.66)
Pretest, Slope	.52	.43	.46	.40		.52
Intercept, Slope T1 (T5)	.67 (.85)	.55 (.84)	.49 (.81)	.49 (.73)		.50 (.79)
Model R-square (%)	56	72	65	60		65
	Sight Word Oral Reading Fluency
Posttest on
Pretest	.53	.70	.88	.55		.68
Intercept T1 (T5)	.32 (.46)	.27 (.42)	−.18^a (−.28^a)	.23 (.29)		.08^a (.11^a)
Slope T1 (T5)	−.04^a (−.21^a)	−.03^a (−.24)	.28 (.41^a)	.17^a (.07^a)		.12^a (.07^a)
Correlation
Pretest, Intercept T1 (T5)	.33 (.37)	.62 (.62)	.68 (.58)	.45 (.50)		.63 (.56)
Pretest, Slope	.36	.45	.26	.42		.24
Intercept, Slope T1 (T5)	.67 (.85)	.54 (.84)	.48 (.81)	.47 (.73)		.44 (.77)
Model R-square (%)	47	77	74	60		60

Note. Estimates standardized. T1, T5 = intercept set at times 1 and 5. Bolded estimates are cases in which slope is a significant predictor. No model was estimated for Novel Struggling-NI students because there was no significant variance in AIMS slope among these students (see Table 2a). CFI = .99, RMSEA = .05, SRMR = .04 for both models.

Non-significant effects (p > .05).