Table 2.
Performance on neuropsychological testing.
| Task | N | Mean off (STD) | Mean on (STD) | F | Partial η2 | P |
|---|---|---|---|---|---|---|
| 0-back | 63 | 94.9% (12.0) | 96.8% (6.0) | 1.5 | 0.02 | 0.23 |
| 1-back | 62 | 75.7% (24.0) | 79.7% (20.9) | 1.4 | 0.02 | 0.25 |
| 2-back | 64 | 62.7% (24.8) | 64.0% (24.8) | 0.3 | 0.01 | 0.57 |
| 3-back | 65 | 54.1% (23.1) | 55.1% (21.6) | 0.2 | <0.01 | 0.69 |
| Verbal IQ | 43 | 105.3 (14.6) | 104.9 (14.5) | 0.2 | <0.01 | 0.68 |
| Non-verbal IQ | 44 | 109.0 (13.6) | 109.2 (14.1) | <0.1 | <0.01 | 0.89 |
| Overall IQ | 43 | 108.1 (14.3) | 108.0 (14.3) | <0.1 | <0.01 | 0.97 |
| Category fluency | 44 | 19.5 (8.8) | 20.1 (7.3) | 0.3 | 0.01 | 0.62 |
| Story memory immediate | 45 | 8.6 (4.9) | 9.4 (4.6) | 1.1 | 0.03 | 0.30 |
| Story memory delay | 45 | 7.0 (4.7) | 9.0 (5.7) | 7.0 | 0.14 | 0.01⁎ |
| HVLT immediate | 44 | 23.1 (7.2) | 23.2 (5.8) | <0.1 | <0.01 | 0.93 |
| HVLT delay | 44 | 7.6 (3.2) | 7.7 (2.6) | 0.1 | <0.01 | 0.82 |
| HVLT recognition | 37 | 10.5 (2.1) | 10.7 (1.8) | 0.1 | <0.01 | 0.73 |
Performance on N-back, WASI (Wechsler Abbreviated Scale Intelligence), category fluency, story, and HVLT (Hopkins Verbal Learning Test) off and on medication is depicted. N-back performance reflects accuracy. Intelligence estimates from the WASI are reflected in the verbal, non-verbal, and overall IQ average scores. Category fluency scores reflect average number of words listed. Story Memory scores reflect the average number of elements of the story remembered. HVLT scores reflect average number of words remembered and recognized.
⁎
Indicates effects with p < 0.05.