Table 2.
Cognitive characteristics of the subjects.
| Test measures by domain | Sample mean score (SD) | Total possible score |
|---|---|---|
| Global cognitive functioning | ||
| Mini-Mental Status Exam (MMSE) | 28.4 (1.3) | 30 |
| Wechsler Abbreviated Scale of Intelligence (WASI) | 112.3 (12.4) | 95% is 149–160 |
| Language | ||
| WASI Vocabulary Subtest | 62.4 (10.4) | 80 |
| Category Fluency for Animals (Animals) | 23.8 (5.5) | 1-minute limit |
| Visual-spatial | ||
| Complex Figure Test (CFT-Copy) | 30.9 (4.2) | 36 |
| WASI Matrix Reasoning Subtest | 25.9 (4.9) | 35 (12–44 yrs) or 32 (45–79 yrs) |
| Memory | ||
| California Verbal Learning Test (CVLT) | ||
| Immediate recall | 5.4 (1.8) | 16 |
| Delayed recall | 11.0 (3.2) | 16 |
| Recognition (Yes/No) | 3.1 (0.8) | −4 to 4 |
| Complex Figure Test (CFT) | ||
| Immediate recall | 15.9 (5.3) | 36 |
| Delayed recall | 15.4 (5.5) | 36 |
| Recognition discrimination | 18.7 (4.1) | 24 |
| Attention-executive-psychomotor | ||
| Trail Making Test A, time in seconds (Trails A) | 29.6 (8.9) | 5-minute limit |
| Trail Making Test B, time in seconds (Trails B) | 74.8 (28.9) | 5-minute limit |
| Controlled Oral Word Association Test (COWAT) | 36.4 (9.8) | 3-minute limit |
| Grooved Pegboard, Dominant Hand, time in seconds (Pegs-D) | 76.6 (14.8) | No limit |
| WAIS-III Digit Span Subtest (Digit Span) | 16.9 (4.2) | 30 |