Table 2.
Means and Standard Deviations of Number of Trials Needed to Reach the Criterion for Each Environment and for Each Group of Participants.
| aMCIsd | aMCImd | Healthy Control | Total | |
|---|---|---|---|---|
| Mean ± SD | Mean ± SD | Mean ± SD | Mean ± SD | |
| Layout only | 2.61 ± 2.15 | 2.78 ± 2.39 | 1.30 ± 1.76 | 1.98 ± 1.76 |
| Layout + positional landmark | 1.36 ± 0.68 | 2.00 ± 1.00 | 1.02 ± 0.14 | 1.33 ± 0.70 |
| Layout + directional landmark | 2.54 ± 1.43 | 3.13 ± 2.63 | 1.19 ± 0.48 | 1.98 ± 1.68 |
| Positional landmark only | 1.68 ± 0.82 | 2.04 ± 1.43 | 1.08 ± 0.33 | 1.45 ± 0.91 |
| Directional landmark only | 2.82 ± 1.93 | 3.70 ± 2.93 | 1.15 ± 0.36 | 2.16 ± 2.01 |
Abbreviations: aMCIsd, amnestic MCI single domain; aMCImd, amnestic MCI multiple domain; SD, standard deviation.