Table 3.
Pearson correlations (two-tailed) of IQ, digit span, cognitive, event-related potential (ERP), electroencephalogram (EEG) and actigraph measures with self-reported symptoms and impairment in individuals with childhood ADHD (N = 108).
| ADHD symptoms |
Impairment |
|||
|---|---|---|---|---|
| r | p | r | p | |
| IQ | −0.12 | 0.21 | 0.02 | 0.81 |
| Digit span forward | 0.02 | 0.83 | −0.02 | 0.83 |
| Digit span backward | −0.07 | 0.45 | −0.01 | 0.92 |
| RTV (CPT-OX) | 0.23 | 0.02 | 0.02 | 0.82 |
| RTV (Fast Task) | 0.33 | <0.01 | 0.21 | 0.03 |
| Commission errors | −0.01 | 0.94 | 0.04 | 0.70 |
| Omission errors | 0.24 | 0.01 | 0.18 | 0.07 |
| CNV | 0.18 | 0.07 | 0.06 | 0.53 |
| Cue P3 | −0.14 | 0.15 | −0.19 | 0.05 |
| No Go P3 | −0.01 | 0.93 | 0.03 | 0.75 |
| Delta | 0.21 | 0.03 | −0.01 | 0.89 |
| Theta | 0.21 | 0.04 | 0.01 | 0.91 |
| Alpha | 0.19 | 0.04 | 0.14 | 0.16 |
| Beta | 0.09 | 0.37 | 0.09 | 0.35 |
| Movement intensity | 0.18 | 0.09 | 0.06 | 0.60 |
| Movement count | 0.26 | 0.03 | 0.18 | 0.15 |
RTV, reaction time variability; CE, commission errors; OE, omission errors; CNV, continuous negative variation. Significant values are presented in bold.