Table 2. Neuropsychological profile in 518 children and adolescents with ADHD.
| Total Sample | Sex | ADHD subtype | Age of onset | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Boys | Girls | p | IA | C | p | Children | Adolescents | p | |||
| WISC-IV | |||||||||||
| Total IQ | 99.30 | 100.06 | 96.38 | <.001 | 99.08 | 99.08 | >.1 | 99.37 | 99.23 | >.1 | |
| V-IQ | 101.16 | 102.58 | 94.89 | <.001 | 101.13 | 101.22 | >.1 | 100.09 | 102.50 | >.1 | |
| M-IQ | 99.59 | 99.89 | 98.24 | >.1 | 99.43 | 99.94 | >.1 | 98.78 | 100.60 | >.1 | |
| VC | 98.13 | 99.23 | 94.71 | <.001 | 98.25 | 97.83 | >.1 | 100.50 | 95.51 | <.001 | |
| PR | 97.14 | 99.70 | 99.76 | >.1 | 99.21 | 100.88 | >.1 | 102.64 | 96.47 | <.001 | |
| WM | 99.71 | 97.62 | 95.63 | >.1 | 96.60 | 98.39 | >.1 | 95.39 | 98.97 | >.1 | |
| PS | 96.59 | 95.53 | 99.64 | >.1 | 96.78 | 96.13 | >.1 | 95.49 | 97.76 | >.1 | |
| CPT-II | |||||||||||
| CE | 47.11 | 47.23 | 46.62 | >.1 | 46.95 | 47.45 | >.1 | 47.67 | 46.45 | >.1 | |
| OE | 50.79 | 50.42 | 52.26 | >.1 | 51.07 | 50.18 | >.1 | 57.84 | 42.65 | <.001 | |
| Hit RT | 54.37 | 54.56 | 56.36 | >.1 | 55.16 | 54.40 | >.1 | 60.37 | 48.66 | <.001 | |
| V’ | 52.17 | 52.03 | 52.72 | >.1 | 52.52 | 51.40 | >.1 | 59.69 | 43.48 | <.001 | |
| P’ | 54.93 | 55.15 | 54.09 | >.1 | 55.62 | 53.40 | >.1 | 62.17 | 46.64 | <.001 | |
| Hit RT BC | 51.19 | 52.05 | 47.83 | >.1 | 51.62 | 50.25 | >.1 | 53.95 | 48.01 | <.001 | |
| SCWT | |||||||||||
| Interference | 51.63 | 52.01 | 50.30 | .032 | 51.37 | 52.18 | >.1 | 50.57 | 52.77 | <.001 | |
Note. ADHD = Attention-deficit/hyperactivity disorder; IA= Inattentive subtype, C= Combined Subtype; WISC= Wechsler Intelligence Scale ( IQ= intelligence quotient, T-IQ: Total IQ, V-IQ: Verbal IQ, M-IQ: Manipulative IQ, VC: Verbal Comprehension, PR: Perceptual Reasoning, WM: working memory, PS: perceptual reasoning) CPT-II: Conners’ Continuous Performance Test II (CE: commission errors, OE: omission errors, Hit RT: Reaction time, V’: variability, P’: perseverance, HitRTBC: response style). SCWT: Stroop COLOR WORD Test *Children (<11.9y), Adolescents (12-18y)