Symbolic working memory—correct trials and average total time to completion
| non-MCI (n = 33) | MCI (n = 24) | significance | |
|---|---|---|---|
| 4-span correct trials (range 0–3) | 2.82 (0.39) | 2.58 (0.65) | ns |
| 4-span average total time (secs.) | 5.80 (2.03) | 8.44 (3.74 | P < 0.001 |
| 5-span correct trials (range 0–3) | 2.21 (0.74) | 1.46 (1.21) | P < 0.005 |
| 5-span average total time (secs.) | 8.72 (3.71) | 10.81 (4.91) | ns |
| 6-span correct trials (range 0–3) | 0.64 (0.74 | 0.33 (0.48) | ns |
| 6-span average total time (secs.) | 11.41 (5.25) | 11.62 (4.63) | ns |
ns: not significant