Mean reaction time (in milliseconds) during the perceptual-motor control task and cognitive processing speed (in milliseconds) during the probabilistic category learning in healthy young and older adults
| Quartile 1 | Quartile 2 | Quartile 3 | Quartile 4 | |
|---|---|---|---|---|
| Perceptual-motor control | ||||
| Older adults | 1599.5 (153.0) | 1481.0 (165.8) | 1184.2 (82.2) | 1150.0 (84.4) |
| Young adults | 1094.6 (139.6) | 1038.8 (151.3) | 1003.3 (75.0) | 987.0 (77.1) |
| Cognitive processing speed | ||||
| Older adults | 0.60 (0.11) | 0.59 (0.12) | 0.66 (0.06) | 0.77 (0.09) |
| Young adults | 0.54 (0.11) | 0.56 (0.10) | 0.49 (0.09) | 0.58 (0.09) |
SE values are in parentheses. Cognitive processing speed during probabilistic category learning was determined by subtracting perceptual-motor control task reaction time (RT) from probabilistic category learning RT and dividing by perceptual-motor control task RT.