. Author manuscript; available in PMC: 2013 Jan 17.

Published in final edited form as: J Educ Psychol. 2012 Aug;104(3):603–621. doi: 10.1037/a0027571

Table 6.

A. Model Fit WJ Math
	AIC	BIC	Deviance	Difference in deviance (LR test) from Comparison Model
Model 1- Intercept	13865.3	13874.9	13857.3	--------
Model 2- Linear	11288.7	11305.5	11274.7	2582.6, χ² (3), p < .001 vs. Model 1
Model 3- Quadratic	11092.9	11119.2	11070.9	203.8, χ² (4), p < .001 vs. Model 2

B. Model Fit WJ Reading
	AIC	BIC	Deviance	Difference in deviance (LR test) From Comparison Model
Model 1- Intercept	15379.2	15388.8	15371.2	--------
Model 2- Linear	13323.9	13340.6	13309.9	2061.3, χ² (3), p < .001 vs. Model 1
Model 3- Quadratic	12835.8	12859.7	12815.8	494.1, χ² (4), p < .001 vs. Model 2

Note. AIC Akaike information criterion. BIC Bayesian information criterion. LR Likehood ratio.