Table 1. Descriptive Statistics and Zero-Order Correlations for Demographic Variables and Teacher-ratings, Parents-ratings, and the Continuous Performance Test.
| Measure | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Measure | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 |
| 1. Teacher-rated Inattention | --- | ||||||||
| 2. Teacher-rated H/I | .63** | --- | |||||||
| 3. Parent-rated Inattention | .18 | .01 | --- | ||||||
| 4. Parent-rated H/I | .01 | -.09 | .46** | --- | |||||
| 5. CPT Omission Errors | .18 | -.17 | .28* | .27* | --- | ||||
| 6. CPT Commission Errors | .01 | .23 | .14 | -.04 | -.04 | --- | |||
| 7. Age (Months) | .10 | .07 | -.02 | .00 | .10 | .01 | -- | ||
| 8. Family Income (1,000s) | -.16 | -.06 | -.24 | -.22 | -.02 | -.01 | -.04 | -- | |
| 9. S-B Copying Subtest | -.22 | -.12 | -.18 | -.01 | -.11 | -.19 | .01 | -.21 | -- |
|
| |||||||||
| Mean | 2.49 | 2.49 | 2.72 | 4.26 | 10.77 | 10.14 | 57.72 | 41-50 | 5.05 |
| SD | 2.87 | 3.15 | 2.58 | 3.06 | 15.09 | 18.22 | 6.98 | -- | 2.15 |
| Range | 0 - 15 | 0 - 12 | 0 - 11 | 0 - 14 | 0 - 40 | 0 - 84 | 50 - 72 | 5 - 125 | 2 - 13 |
| Skew | 1.94* | 1.38* | 1.11* | 1.05* | 1.69* | 1.86* | 0.72 | -1.58* | 1.58* |
Note. N = 65. H/I = hyperactivity/impulsivity; CPT = Continuous Performance Test. Descriptive statistics are on measures uncorrected for outliers and skew. Correlation coefficients are on measures age-standardized and with outliers and skew corrected.
*
p < .05.
**
p < .01.