Table 3.
Overview of the processing strategies used (in percentages) by the child with dyscalculia and the control group (including range of percentages) in the symbolic 0–100 and 0–1000 number line tasks including p-values and effect sizes.
| Strategy | Child with dyscalculia | Control groupa | Test results | |||||
|---|---|---|---|---|---|---|---|---|
| 0–100 | 0–1000 | 0–100 | 0–1000 | 0–100 | 0–1000 | |||
| % | % | % | % | p-value | zcc | p-value | zcc | |
| Holistic | 26.7 | 0.0 | 49.7 (30.0–73.3)b | 22.0 (0.0–56.7)b | .057 | −1.84 | .144 | −1.18 |
| Decomposed parallel | 13.3 | 20.0 | 21.3 (10.0–46.7)b | 55.3 (20.0–76.7)b | .286 | −0.62 | .067 | −1.72 |
| Decomposed sequential | 10.0 | 0.0 | 11.0 (6.7–23.3)b | 1.7 (0.0–10.0)b | .461 | −0.11 | .314 | −0.53 |
| Other | 10.0 | 23.3 | 12.0 (0.0–30.0)b | 15.0 (3.0–30.0)b | .421 | −0.22 | .184 | 0.99 |
| Undefined | 40.0 | 56.7 | 6.0 (0.0–13.3)b | 6.0 (0.0–26.7)b | .000 | 6.59 | .000 | 5.90 |
a
n = 10, numbers represent the mean percentage of the 10 control children.
b
Range of the percentages of the 10 control children, see appendix for individual results of the control children. Zcc, obvious direct analog of Cohen's d, subscript representing “case-controls.”