Table 1.
Exploratory Factor Analysis of D-KEFS Executive Functioning Tasks: Primary and Secondary Loadings
| Cognitive Flexibility/Timed Tasks (Variance Explained = 31.2%) | Abstraction (Variance Explained = 7.7%) | |
| Color-Word Inhibition/Switching | 0.90 | −0.16 |
| Color-Word Inhibition | 0.81 | 0.00 |
| Design Fluency Switching | 0.64 | 0.07 |
| Trails Number-Letter Switching | 0.54 | 0.21 |
| Verbal Fluency Switching Correct | 0.39 | 0.18 |
| Word Context | 0.03 | 0.78 |
| Proverb | −0.06 | 0.60 |
| Sorting | 0.14 | 0.58 |
| Twenty Questions | −0.03 | 0.52 |
| Tower | 0.14 | 0.30 |
Note: D-KEFS, Delis-Kaplan Executive Function System. Correlation between 2 factors = 0.57. Loadings reflect pattern coefficients yielded by principal axis factoring. Bold values reflect primary loadings.