Mean scores for cognitive measures at initial assessment of 237 patients with first-episode psychosis
| Cognitive measure | Mean score (and SD) | Range |
|---|---|---|
| Verbal fluency | ||
| Category fluency | 37.6 (9.1) | 12–67 |
| Letter fluency | 32.3 (10.0) | 4–61 |
| Visual-spatial ability and motor speed | ||
| Digit symbol | 8.7 (2.7) | 3–20 |
| Trails A | 35.3 (15.3) | |
| Memory | ||
| Immediate verbal memory | 21.1 (22.1) | 1–96 |
| Delayed verbal memory | 22.1 (20.2) | 1–95 |
| Immediate serial learning | 40.2 (11.4) | 8–67 |
| Delayed serial learning | 7.4 (3.2) | 0–15 |
| Visual memory (Rey recall) | 20.6 (7.0) | 0–36 |
| Executive functioning | ||
| WCST categories | 5.1 (1.7) | 0–6 |
| WCST perseverative errors | 14.7 (13.3) | 4–94 |
| Trails B | 83.6 (52.4) | 15–300 |
| Visual attention (CPT) | 85.5 (10.9) | 0–99 |
| Early information processing (SPAN) | 46.5 (9.3) | 13–62 |
Note: SD = standard deviation; WCST = Wisconsin Card Sorting Test; CPT = Continuous Performance Test; SPAN = Forced-Choice Span of Apprehension Test.