Table 3. QCM Scores for Initial Task Motivation.
| ADHD R− | ADHD R+ | CON R− | CON R+ | Diagnostic Group | Reward | Diagnostic Group X Reward | |
| (n = 18) | (n = 20) | (n = 20) | (n = 20) | ||||
| M (SD) | M (SD) | M (SD) | M (SD) | F | |||
| SST | 4.38 (1.00) | 4.47 (1.32) | 5.03 (1.09) | 4.66 (1.10) | 2.63 | 0.26 | 0.80 |
| n-back | 4.22 (1.06) | 3.71 (1.19) | 5.13 (1.47) | 4.23 (0.88) | 7.10** | 7.05* | 0.55 |
| CPT | 4.40 (1.26) | 4.61 (1.35) | 4.99 (1.16) | 4.49 (0.89) | 0.74 | 0.30 | 1.77 |
| Time Discrimination | 4.26 (1.09) | 4.38 (1.21) | 5.03 (1.11) | 4.23 (0.98) | 1.50 | 1.91 | 3.34 |
| Time Reproduction | 4.08 (1.01) | 4.41 (1.25) | 4.78 (1.28) | 4.18 (0.93) | 0.79 | 0.28 | 3.28 |
| Delay Aversion | 4.22 (1.27) | 4.63 (1.31) | 4.47 (1.10) | 3.98 (0.93) | 0.57 | 0.03 | 2.91 |
ADHD, ADHD group; CON, control group. R−, no financial reward; R+, financial reward. Diagnostic Group, main effect of diagnostic group; Reward, main effect of reward condition; Diagnostic Group × Reward, interaction effect of diagnostic group and reward condition. n, number of subjects; M, median; SD, standard deviation. SST, stop-signal task; n-back, n-back task; CPT, continuous performance task. F = F-Values.*p<0.05; **p<0.01; ***p<0.001.