Table 1.
Components of the neuropsychological (NP) test battery
| Cognitive domain | NP test measure | Range (min–max) | Number of observations | Number of participants | Higher score indicates |
|---|---|---|---|---|---|
| Verbal memory | WMS-III Logical Memory–Immediate Recall WMS-III Logical Memory–Delayed Recall WMS-III Logical Memory–Delayed Recognition |
0–23 0–23 0–11 |
2641 2630 2635 |
1769 1760 1760 |
Better performance |
| Visual memory | WMS-III Visual Reproductions–Immediate Recall WMS-III Visual Reproductions–Delayed Recall WMS-III Visual Reproductions–Delayed Recognition |
0–14 0–140 0–4 |
2636 2623 2619 |
1763 1756 1754 |
Better performance |
| Verbal learning | WMS-III Paired Associates–Immediate Recall WMS-III Paired Associates–Delayed Recall |
0–21 0–10 |
2598 2609 |
1746 1742 |
Better performance |
| Attention and concentration | Trail-making Test A (Trails A) Trail-making Test B (Trails B) |
0·10–7·0 0·32–10·0 |
2582 2506 |
1727 1682 |
Poorer performance |
| Abstract reasoning | WAIS-III Similarities subtest | 0–26 | 2648 | 1767 | Better performance |
| Language | Boston Naming Test (30-item version) | 0–30 | 2602 | 1747 | Better performance |
| Visuoperceptual organisation | Hooper Visual Organisation Test | 0–30 | 2524 | 1701 | Better performance |
| Global function | An average of individual cognitive domain scores |
WMS, Wechsler Memory Scale; WAIS, Wechsler Adult Intelligence Scale.