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. Author manuscript; available in PMC: 2012 Mar 1.
Published in final edited form as: J Exp Child Psychol. 2011 Mar;108(3):453–468. doi: 10.1016/j.jecp.2010.08.009

Table 3.

Fit Indices for the Multi-group Measurement Models

CFA Factors χ2 df p RMSEA 90% CI CFI AIC
1 G 253.49 136 < .001 .16 .13 –.19 .86 421.49
2 PS EF 227.88 132 <.001 .14 .11 – .17 .88 403.88
3 PS INH WM 149.03 128 .10 .07 .00 – .11 .95 333.03
4 PS INH WMS WMU 139.80 116 .07 .08 .00 – .12 .95 347.80
Comparison Description Δχ2 Δdf p
CFA 1 vs. 2 G fractionated into PS and EF 25.61 4 <.001
CFA 2 vs. 3 EF fractionated into INH and WM 78.85 4 <.001
CFA 3 vs. 4 WM fractionated into WMS and WMU 9.23 12 .68

Note: G = general resource, EF = executive function, PS = processing speed, INH = response inhibition, WM = working memory, WMS = working memory storage, WMU = working memory updating.