Table 3.

Exploratory Factor Analysis of D-KEFS Residual Scores (Accounting for Processing Speed): Primary and Secondary Loadings

	Cognitive Flexibility/Time Tasks (Variance Explained = 27.4%)	Abstraction (Variance Explained = 11.3%)
Color-Word Inhibition/Switching	0.88	−0.16
Color-Word Inhibition	0.67	0.02
Design Fluency Switching	0.50	0.06
Trails Number-Letter Switching	0.37	0.19
Word Context	0.01	0.78
Proverb	−0.05	0.58
Sorting	0.06	0.54
Twenty Questions	0.01	0.47

Note: D-KEFS, Delis-Kaplan Executive Function System. Correlation between 2 factors = 0.42. Loadings reflect pattern coefficients yielded by principal axis factoring. Bold values reflect primary loadings. Verbal Fluency and Tower were dropped from the final factor analysis because they had no strong univocal loadings.