Table 2.
Summary of the results on the non-symbolic and symbolic number line tasks, number of trials, logarithmic and linear fit (R2), and percent absolute error of the child with dyscalculia and the control group including p-values and effect sizes.
| Number line | n | Child with dyscalculia (n = 1) | Control group (n = 10) | R2lin | R2log | Absolute error | |||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| R2lin | R2log | Absolute error (%) | R2lin | R2log | Absolute error (%) | p-value | zcc | p-value | zcc | p-value | zcc | ||
| NON-SYMBOLIC | |||||||||||||
| 0–100 | 33 | 0.699 | 0.712 | 17.7 | 0.783 | 0.695 | 13.0 | .143 | −1.19 | .454 | 0.13 | .147 | 1.17 |
| SYMBOLIC | |||||||||||||
| 0–100 | 33 | 0.849 | 0.698 | 10.7 | 0.955 | 0.780 | 4.3 | .015 | −2.70 | .002 | −4.10 | .000 | 5.77 |
| 0–1000 | 33 | 0.268 | 0.325 | 20.1 | 0.930 | 0.602 | 5.8 | .000 | −22.07 | .000 | 13.85 | .000 | 13.75 |
n, number of trials, excluding two practice trials; R2lin and R2log represent the linear and logarithmic fit of the estimated numbers; Absolute error, mean percent absolute error. Zcc, obvious direct analog of Cohen's d, subscript representing “case-controls.”