Table 2.
Comparison of the TD and ADHD-I groups with respect to performance on the CCPT indicators (T-test).
| Attentional measure | TD (SD) | ADHD-I (SD) | t | p-Value | Cohen’s d |
|---|---|---|---|---|---|
| CCPT omissions | 0.556 (0.421) | −0.058 (1.101) | −5.17 | 0.001** | 0.736 |
| CCPT commissions | 0.119 (1.080) | −0.128 (0.913) | −0.92 | 0.363 | 0.247 |
| CCPT hit RT | 0.442 (0.812) | −0.458 (0.982) | −3.78 | 0.001** | 0.998 |
| CCPT hit RT SE | 0.590 (0.363) | −0.634 (1.081) | −5.764 | 0.001** | 1.518 |
| CCPT variability | 0.518 (0.431) | −0.556 (1.137) | −4.74 | 0.001** | 1.249 |
| CCPT detectability | 0.144 (1.112) | −0.155 (0.857) | −1.12 | 0.267 | 0.301 |
| CCPT response style | 0.292 (0.455) | −0.314 (1.302) | −2.36 | 0.022* | 0.621 |
| CCPT perseverations | 0.254 (0.118) | −0.273 (1.397) | −2.02 | 0.048* | 0.532 |
| CCPT hit RT block change | 0.282 (0.622) | −0.292 (1.224) | −2.24 | 0.029* | 0.591 |
| CCPT hit RT block change SE | 0.136 (0.899) | −0.146 (1.096) | −1.05 | 0.296 | 0.281 |
| CCPT hit RT inter-stimulus interval | 0.484 (0.761) | −0.520 (0.974) | −4.32 | 0.001** | 1.149 |
| CCPT hit RT inter-stimulus interval SE | 0.448 (0.779) | −0.481 (0.998) | −3.89 | 0.001** | 1.038 |
ADHD-I, attention-deficit/hyperactivity disorder inattentive type; TD, typically developing; SE, standard error; CCPT, Conners’ continuous performance test II; RT, reaction time; t, T-test.
*Significant at p < 0.05.
**Significant at p < 0.01.