Table 2.
Descriptive data and comparison between the control groups and H.V., in the alertness and number sense tasks.
| Domain assessed | Task | Controls (n = 08) | H.V. | Modified t-test | p | Z-CC | Estimated % pop. below H.V. | |
|---|---|---|---|---|---|---|---|---|
| Mean | SD | |||||||
| Alertness | Simple manual reaction time | 413.3 | 32.9 | 381.3 | −0.92 | 0.39 | −0.97 | 19 |
| Number sense | SYMBOLIC MAGNITUDE COMPARISON | |||||||
| Response time* | 771.6 | 154.8 | 1153.3 | 2.32 | 0.05 | 2.47 | 97 | |
| Weber Fraction | 0.27 | 0.17 | 0.12 | −0.83 | 0.21 | −0.88 | 22 | |
| NON-SYMBOLIC MAGNITUDE COMPARISON | ||||||||
| Response time* | 1035.5 | 199.5 | 1003.2 | −0.15 | 0.88 | −0.16 | 44 | |
| Weber fraction | 0.29 | 0.06 | 0.42 | 2.24 | 0.04 | 2.17 | 4 | |
ZCC: magnitude effect index calculated by the difference between the scores of the control group and the single case with a 95% CI (Crawford et al., 2010);
*
time in milliseconds.