Table 2.
Neurocognitive assessment for all participants
| Active | Inactive | Statistics F | d.f. | p-value | η2 | ||
|---|---|---|---|---|---|---|---|
| WAIS-III | |||||||
| Full scale IQ | 109.0 (1.6) | 101.3 (2.6) | 6.311 | 1 | 0.014 | 0.06 | |
| Premorbid IQ (vocabulary) | 11.8 (0.3) | 10.9 (0.4) | 3.086 | 1 | 0.082 | – | |
| D-KEFS | |||||||
| Principal component (PC) | |||||||
| Test included in PC1 | Loading on PC1 (P1) | ||||||
| Color word 3 | 0.325713 | 10.3 (0.3) | 7.6 (0.6) | 16.225 | 1 | < 0.001 | 0.14 |
| Color word 4 | 0.326118 | 10.0 (0.3) | 8.4 (0.6) | 6.057 | 1 | 0.016 | 0.06 |
| Verbal fluency 2 | 0.340796 | 13.0 (0.5) | 10.9 (0.8) | 5.010 | 1 | 0.027 | 0.05 |
| Verbal fluency 3—correct responses | 0.334285 | 11.8 (0.4) | 10.1 (0.6) | 4.944 | 1 | 0.028 | 0.05 |
| Verbal fluency 3—switching accuracy | 0.30624 | 12.1 (0.4) | 9.6 (0.6) | 12.161 | 1 | 0.001 | 0.10 |
| Design fluency 2 | 0.22314 | 11.4 (0.4) | 10.2 (0.6) | 2.542 | 1 | 0.114 | – |
| Design fluency 3 | 0.26376 | 11.3 (0.3) | 9.9 (0.5) | 5.028 | 1 | 0.027 | 0.05 |
| TMT 2 | 0.303005 | 9.7 (0.4) | 7.6 (0.6) | 7.415 | 1 | 0.008 | 0.07 |
| TMT 3 | 0.309674 | 10.0 (0.3) | 8.0 (0.6) | 8.206 | 1 | 0.005 | 0.08 |
| TMT 4 | 0.330988 | 9.7 (0.3) | 7.9 (0.6) | 7.438 | 1 | 0.008 | 0.07 |
| Tower test | 0.221951 | 11.2 (0.4) | 9.4 (0.7) | 4.360 | 1 | 0.040 | 0.05 |
Results from WAIS-III and D-KEFS subtests are scaled scores, for which the average range is 9-11 (low average scores = 7–8; high average scores = 12–13). The average range for WAIS-III Full Scale IQ is 85–115
WAIS-III Wechsler Adult Intelligence Scale, D-KEFS Delis–Kaplan Executive Function System