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Perceived difficulty ratings for cognitive tasks: Mean (SD)
| Difficulty level | Cognitive tasks | |||||
|---|---|---|---|---|---|---|
| Random Digit Generation | Brooks’ Spatial Memory | Counting Backward | ||||
| Young | Old | Young | Old | Young | Old | |
| Low | 1.42 (0.67) | 2.83 (0.83) | 3.17 (0.94) | 3.33 (1.15) | 1.33 (0.49) | 3.25 (0.97) |
| Medium | 2.00 (0.85) | 3.75 (0.75) | 4.17 (0.72) | 4.67 (1.07) | 3.17 (0.94) | 5.00 (0.95) |
| High | 3.42 (1.24) | 4.83 (1.11) | 5.75 (0.45) | 6.00 (0.95) | 4.92 (1.00) | 6.42 (0.79) |
