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

Published in final edited form as: J Psychopathol Behav Assess. 2014 Dec;36(4):626–639. doi: 10.1007/s10862-014-9424-3

Table 2.

Indices of Absolute and Relative Model Fit for Models of Children’s Performance on Executive Function Tasks

Models	Y-Bχ²	df	CFI	TLI	RMSEA	AIC	ΔY-Bχ²
Model comparison using raw EF scores
One-Factor Model
Model 1: WM + IC	71.67^***	34	.94	.93	.06	7571	---
Two-Factor Models
Model 2: WM, IC	55.60^**	33	.97	.96	.05	7555	10.55^**
Model 3: WM + IC_C; IC_S	72.10^***	33	.94	.92	.07	7572	.19
Model 4: WM + IC_S; IC_C	69.75^***	33	.95	.93	.06	7570	1.92
Three-Factor Model
Model 5: IC_c; IC_s; WM	55.88^**	31	.96	.95	.05	7558	.22
Model comparison using oral language-adjusted EF scores
One-Factor Model
Model 1: WM + IC	54.46 ^*	34	.88	.84	.05	7518	---
Two-Factor Models
Model 2: WM, IC	44.45^ns	33	.93	.91	.04	7509	8.83^**
Model 3: WM + IC_C; IC_S	55.50^**	33	.87	.92	.05	7520	.04
Model 4: WM + IC_S; IC_C	53.55^*	33	.88	.93	.05	7518	.97
Three-Factor Model
Model 5: IC_c; IC_s; WM	43.31^ns	31	.93	.89	.04	7511	1.42

Note. N = 284. χ²-difference tests for two-factor models involve comparisons to Model 1, and χ²-difference test for the three-factor model involved comparison to Model 2. WM = Working Memory, IC_s = Inhibitory Control, suppression subtype, IC_c = Inhibitory Control, response conflict subtype. Y-B χ² = Yuan-Bentler Chi-Square; CFI = Comparative Fit Index; TLI = Tucker-Lewis Index; RMSEA = Root Mean Squared Error of Approximation; AIC = Akaike’s Information Criterion.

^ns

p > .05;

p < .05;

^**

p < .01;

^***

p < .001.