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Descriptive statistics mean (standard deviation) of age, short-form version of the standard matrices (SRPM) performances, response times (RTs) by grade group.
| Grades | 2 | 3 | 4 | 5 |
|---|---|---|---|---|
| N | 46 | 38 | 43 | 43 |
| Age | 95.3 (5.04) | 105.6 (3.7) | 117.3 (4.38) | 129.3 (4.09) |
| SRPM perf. | 0.49 (0.17) | 0.6 (0.13) | 0.63 (0.13) | 0.7 (0.1) |
| Log.RT | 9.76 (0.88) | 9.71 (0.84) | 9.83 (0.93) | 9.58 (0.86) |
