Table 2.
Means and standard deviations of study variables by sample.
| CPS-Referred | Comparison | |||
|---|---|---|---|---|
|
|
||||
| M | SD | M | SD | |
| CBCL Anxious/Depressed | 2.24 | 2.5 | 1.98 | 2.23 |
| CBCL Withdrawn/Depressed | 1.42 | 1.69 | .57 | 1.06 |
| CBCL DSM-Oriented Anxiety Problems | 1.35 | 1.46 | 1.40 | 1.71 |
| CBCL Externalizing Problems | 9.25 | 8.89 | 3.66 | 2.89 |
| Flanker Accuracy-Overall (%) | .77 | .11 | 0.83 | .10 |
| Flanker Accuracy-Congruent (%) | .85 | .09 | .88 | .09 |
| Flanker Accuracy-Incongruent (%) | .70 | .15 | .77 | .13 |
| Flanker Reaction Time (ms) | 365.88 | 86.52 | 381.21 | 92.27 |
| Flanker Reaction Time-Error (ms) | 259.75 | 85.99 | 283.10 | 82.76 |
| Flanker Reaction Time-Correct (ms) | 373.99 | 77.61 | 384.94 | 83.54 |
| Flanker Reaction Time-Congruent (ms) | 344.21 | 81.44 | 354.77 | 87.62 |
| Flanker Reaction Time-Incongruent (ms) | 388.79 | 96.00 | 409.62 | 100.08 |
| Flanker Post-error Reaction Time (ms) | 373.08 | 111.19 | 401.69 | 102.46 |
| Flanker Post-error Slowing (ms) - Traditional | 8.32 | 66.90 | 24.36 | 43.80 |
| Flanker Post-error Slowing (ms) - Robust | 49.15 | 65.69 | 64.81 | 63.46 |
| Flanker Post-error Accuracy (%) | .79 | .13 | .84 | .15 |
| Flanker Post-error Accuracy (%) - Difference | −.04 | .08 | −.03 | .12 |
| ERN (µV) | 5.4 | 10.04 | 5.78 | 8.97 |
| CRN (µV) | 18.05 | 9.98 | 17.21 | 8.24 |
| Age (years) | 8.48 | .37 | 8.52 | .33 |
| Gender (% Female) | .45 | -- | .49 | -- |
Note: Post-error slowing—traditional: Post-error slowing is calculated by subtracting reaction time on post-correct trials from reaction time on post-error trials. Post-error slowing—robust: An average of the differences between reaction time on paired post-error trials and pre-error trials. CBCL: Child Behavior Checklist. ERN: error-related negativity. CRN: correct response negativity.