Table 3.
Reaction time tasks: Means (iM) and intra-individual standard deviation of residual scores (iSDr) by Age group.
| Age Groups | ||||||||
|---|---|---|---|---|---|---|---|---|
| Children | Young Adults | Older Adults | ||||||
| M | SD | M | SD | M | SD | |||
| iM | SRT | 360.03 | 68.78 | 272.89 | 39.16 | 333.50 | 73.41 | |
| LI | 565.38 | 101.31 | 372.38 | 43.52 | 457.66 | 70.46 | ||
| CS | 495.57 | 105.41 | 325.69 | 39.26 | 431.16 | 76.75 | ||
| DI | 1737.32 | 447.94 | 1040.56 | 221.47 | 1668.96 | 352.86 | ||
| LC | 6 letters | 3626.06 | 1236.06 | 1838.17 | 423.31 | 2971.24 | 799.48 | |
| 9 letters | 5092.16 | 1550.37 | 2798.36 | 654.47 | 4316.61 | 1114.48 | ||
| ST | Neutral | 842.21 | 146.76 | 594.77 | 75.85 | 724.31 | 110.05 | |
| Incongruent | 1019.96 | 184.77 | 720.89 | 102.30 | 927.75 | 166.67 | ||
| iSDr | SRT | 11.38 | 3.04 | 7.17 | 2.15 | 9.23 | 2.75 | |
| LI | 12.24 | 3.48 | 6.42 | 1.98 | 8.58 | 2.72 | ||
| CS | 12.27 | 3.94 | 5.93 | 1.78 | 8.86 | 2.50 | ||
| DI | 12.04 | 3.55 | 5.69 | 1.91 | 9.23 | 2.35 | ||
| LC | 6 letters | 12.56 | 5.22 | 5.03 | 1.67 | 8.17 | 2.86 | |
| 9 letters | 12.64 | 4.11 | 5.83 | 1.81 | 8.88 | 2.56 | ||
| ST | Neutral | 12.97 | 3.85 | 6.16 | 1.91 | 7.71 | 2.81 | |
| Incongruent | 12.40 | 2.95 | 7.16 | 1.92 | 8.83 | 2.55 | ||
Note: SRT: Simple reaction time task; LI: Line comparison task; CS: Cross-square task; LC: Letter comparison task; DI: Digit symbol task; ST: Stroop task; iM: intra-individual mean; iSDr: standard deviation of residual scores; M: Group’s mean; SD: Group’s standard deviations.