Table 1.
Descriptive Statistics.
| ADHD | Non-ADHD | |||||||
|---|---|---|---|---|---|---|---|---|
| Demographics | M | SD | M | SD | Cohen’s d | t | χ2 | p |
| N (Boys/Girls) | 93 (64/29) | 48 (26/22) | - | - | 2.94 | .09, n.s. | ||
| Ethnicity (A, MR, B, H, W) | (0, 6, 13, 5, 69) | (1, 6, 4, 7, 30) | - | - | 7.91 | .10, n.s. | ||
| Age | 10.30 | 1.48 | 10.46 | 1.45 | - | 0.54 | - | .55, n.s. |
| SES | 49.01 | 10.60 | 49.81 | 11.98 | - | 0.38 | - | .69, n.s. |
| VCI | 103.42 | 14.98 | 107.58 | 11.83 | 0.31 | 1.67 | - | .08, n.s. |
| Parent - Activities of Daily Living (T-scores) | 35.70 | 9.58 | 42.58 | 9.00 | 0.74 | 4.13 | - | <.001 |
| Working Memory Component Score (z-scores) | −0.31 | 0.97 | 0.60 | 0.77 | 1.17 | 6.33 | - | <.001 |
| Parent - Activities of Daily Living (raw scores) | 10.63 | 4.06 | 13.1 | 3.71 | 0.61 | 3.39 | - | <.005 |
| Parent - Activities of Daily Living Modified (raw scores) | 9.03 | 3.61 | 11.0 | 3.22 | 0.57 | 3.21 | - | .002 |
| Teacher - Attention Problems (raw scores) | 16.87 | 6.13 | 10.54 | 7.78 | 0.90 | −5.34 | - | <.001 |
| Teacher - Hyperactivity/Impulsivity (raw scores) | 12.59 | 8.80 | 6.06 | 7.09 | 0.80 | −4.37 | - | <.001 |
Note: Parent - Activities of Daily Living (Modified) reflects raw scores with the ‘organizes tasks’ item removed due to its similarity to a core ADHD inattentive symptom as described in the Method (footnote 2). A = Asian; B = Black/African American; MR = Multiracial; H = Hispanic; SES =Hollingshead SES total score; VCI=Wechsler Verbal Comprehension Index; W = White/Non-Hispanic