Table 3.
CPT-II performance by group (ADHD vs. comparison)
| CPT-II Measure | ADHD (n=216) T-score (SD) |
Comparison (n=220) T-score (SD) |
t (434) | p | Cohen’s d |
|---|---|---|---|---|---|
| Omissions % | 55.16 (19.92) | 49.08 (14.02) | 3.69 | <0.001 | 0.35 |
| Commissions % | 60.69 (11.47) | 52.18 (10.82) | 7.97 | <0.001 | 0.76 |
| Hit RT | 47.85 (9.21) | 49.61 (10.51) | −1.85 | 0.064 | −0.18 |
| Hit RT Std. Error | 50.30 (14.44) | 46.99 (11.87) | 2.62 | 0.009 | 0.25 |
| Variability | 52.57 (12.87) | 48.30 (9.98) | 3.88 | <0.001 | 0.37 |
| Detectability (d’) | 57.35 (9.13) | 51.32 (9.85) | 6.63 | <0.001 | 0.63 |
| Response Style (Beta) | 46.75 (6.72) | 47.66 (7.23) | −1.36 | 0.174 | −0.13 |
| Perseverations % | 56.32 (17.20) | 51.06 (13.00) | 3.61 | <0.001 | 0.35 |
| Hit RT Block Change | 51.33 (9.19) | 48.20 (9.43) | 3.51 | <0.001 | 0.34 |
| Hit SE Block Change | 58.19 (11.63) | 53.71 (12.15) | 3.93 | <0.001 | 0.38 |
| Hit RT ISI Change | 51.64 (12.09) | 49.20 (10.47) | 2.25 | 0.025 | 0.22 |
| Hit SE ISI Change | 52.57 (12.10) | 50.53 (9.72) | 1.95 | 0.052 | 0.19 |