Table 2.
Neuropsychological performance in 15 elderly healthy control subjects.
| Test | Elderly Controlsa,b |
|---|---|
| Digit Span Forwards (Wechsler, 1997) | 7.2 (0.8) 6–8 |
| DKEFS (Delis et al., 2001) Number Sequencing Time (seconds) | 36.6 (8.3) 19–47 |
| DKEFS Number-Letter Sequencing Time (seconds) | 97.7 (53.4) 41.4–272.0 |
| DKEFS Category Fluency (Total number of words generated over 60 seconds) | 39.2 (7.3) 29–57 |
| DKEFS Letter Fluency (Total number of words generated over 60 seconds) | 45.9 (11.1) 31–70 |
| Clock Drawing Test (Freedman, 1994) | 9.3 (1.1) 6–10 |
| CVLT (Delis et al., 1987) Total number of words recalled – Sum of Trials 1–5 | 57.3 (10.5) 41–76 |
| CVLT Long Delay Free Recall (Total number of words recalled – Single Trial) | 12.4 (2.9) 7–16 |
a
Elderly healthy controls were defined as those participants age 50 years and older and all completed the neuropsychological assessment that included these eight representative tests.
b
Scores presented as Mean (Standard Deviation) and range. California Verbal Learning Test, CVLT; Delis-Kaplan Executive Functioning System, DKEFS).