Table 3.
Regression Results for Reactivity Adjusted for MD and TA on the Working Memory and Processing Speed Tasks.
| B | SE | β | t | p | R2 | R2* | d | |
|---|---|---|---|---|---|---|---|---|
| Working memory for numbers | −2.52 | 0.97 | −.27 | −2.59 | 01* | .07 | .13 | −.66 |
| Working memory for words | −1.83 | 0.83 | −.23 | −2.22 | .02* | .06 | .11 | −.88 |
| Digit span forward | −0.86 | 1.07 | −.09 | −0.80 | .42 | .01 | .06 | .02 |
| Digit span backward | 0.23 | 0.94 | .03 | 0.25 | .81 | .00 | .04 | .14 |
| Rapid number naming | 3.48 | 3.12 | .12 | 1.12 | .27 | .02 | .09 | .09 |
| Rapid picture naming | 16.64 | 8.43 | −.21 | −1.97 | .05 | .04 | .09 | −.57 |
| Letter number sequence | −2.28 | 1.79 | −.13 | −1.27 | .21 | .02 | .16 | −.38 |
| Quantitative concepts | −18.07 | 6.95 | −.23 | −2.60 | .01* | .06 | .36 | −.55 |
| Block rotation | −3.16 | 10.53 | −.03 | −0.30 | .76 | .00 | .04 | .08 |
Note: d was calculated for high reactivity compared to low reactivity categories. A negative effect size indicates that the low reactivity group performed better than the high reactivity group. The effect size is the difference in standard deviations in mean score according to group membership. R2 indicates the percentage of variance in scores accounted for by reactivity after controlling for MD/TA. R2* indicates the percentage of variance in scores accounted by both MD/TA and reactivity. MD = math disability; TA = typically achieving.
*
p< .05.