Table 4.
Descriptive data and comparison between control groups and G.A. in the alertness and number sense tasks.
| Domain assessed | Task (total of items) | Controls (n = 17) | G.A. | Modified t-test | p | Z-CC | Estimated % pop. below G.A. | |
|---|---|---|---|---|---|---|---|---|
| Mean | SD | |||||||
| Alertness | Simple manual reaction time* | 423.8 | 82.3 | 447.9 | 0.29 | 0.39 | 0.29 | 39 |
| Number sense | SYMBOLIC MAGNITUDE COMPARISON | |||||||
| Response time* | 983.1 | 249.4 | 1344.9 | 1.41 | 0.09 | 1.45 | 9 | |
| Weber fraction | 0.21 | 0.14 | 0.78 | 3.96 | <0.001 | 4.07 | >99 | |
| NON-SYMBOLIC MAGNITUDE COMPARISON | ||||||||
| Response time* | 1276.3 | 294.9 | 1038.2 | −0.79 | 0.22 | −0.81 | 39 | |
| Weber fraction | 0.28 | 0.10 | 0.21 | −0.68 | 0.25 | −0.70 | 25 | |
ZCC: magnitude effect index calculated by the difference between the scores of control group and single-case with a 95% CI (Crawford et al., 2010);
*
time in milliseconds.