. Author manuscript; available in PMC: 2011 Mar 1.

Published in final edited form as: Neuropsychology. 2010 Mar;24(2):222–243. doi: 10.1037/a0017619

Table 5.

Models Examining Relations Among Working Memory Capacity, Executive Function, and Episodic Memory.

	Factor Correlations

Model	1	2	3	χ²	df	CFI	RMSEA
Model 1: Three-Factors				126.7	41	.915	.099
(1) Working Memory Capacity	-
(2) Executive Function	.97	-
(3) Processing Speed	.77	.81	-
Model 2: Two-Factors				127.8	43	.916	.099
(1) Executive Attention (WMC/EF)	-
(2) Processing Speed	.79	-
Model 3: One-Factor				209.0	44	.837	.137
Model 4: Three-Factors, Controlling for Age				156.7	49	.912	.086
(1) Working Memory Capacity	-
(2) Executive Function	.95	-
(3) Processing Speed	.62	.70	-
Model 5: Two-Factors Controlling Age				158.4	52	.913	.083
(1) Executive Attention (WMC/EF)	-
(2) Processing Speed	.66	-
Model 6: One-Factor Controlling Age				258.0	54	.833	.121