Measure | TD (n = 21) | ARND (n = 22) | ADHD (n = 20) | Significancea | Post-hoc tests | |||
---|---|---|---|---|---|---|---|---|
 | Mean | Std Dev | Mean | Std Dev | Mean | Std Dev |  |  |
Age (years) | 12.60 | 1.29 | 12.21 | 1.63 | 11.99 | 1.32 | F = 0.950 P = 0.392 |  |
Gender (% male) | 76.2 |  | 63.6 |  | 90 |  | χ2 = 4.014 P = 0.134 |  |
Household Income ($)b | 70,842 | 15,302 | 52,989 | 19,690 | 66,167 | 27,416 | F = 3.965 P = 0.024 | TD > ARNDcP = 0.006 |
Full Scale IQ | 107.81 | 13.08 | 74.38 | 11.69 | 96.55 | 16.87 | F = 30.968 P <0.001 | TD > ARNDdP <0.001 |
ADHD > ARND P <0.001 |