Table 1. Demographic measures, raw scores on IQ tests, and depression, anxiety, and ADHD scores.
| Variables | Methylphenidate | F | P | |||
|---|---|---|---|---|---|---|
| Placebo | 10 mg | 20 mg | 40 mg | |||
| N | 9 | 9 | 9 | 9 | ||
| Age | 22.22 ± 2.59 | 22.33 ± 2.69 | 23.67 ± 2.60 | 22.56 ± 2.60 | 0.57 | 0.63 |
| Education | 14.11 ± 2.71 | 13.56 ± 1.51 | 14.78 ± 2.68 | 13.78 ± 1.86 | 0.50 | 0.68 |
| Raven | 53.00 ± 5.61 | 52.44 ± 3.64 | 54.25 ± 3.01 | 55.11 ± 3.37 | 0.78 | 0.51 |
| Cubes | 52.22 ± 9.85 | 54.22 ± 9.24 | 56.00 ± 6.71 | 59.22 ± 5.21 | 1.24 | 0.30 |
| Vocabulary | 43.00 ± 3.20 | 43.22 ± 5.14 | 40.56 ± 4.07 | 44.78 ± 3.42 | 1.68 | 0.18 |
| Beck | 3.88 ± 3.01 | 4.11 ± 3.48 | 2.88 ± 3.4 | 5.33 ± 4.00 | 0.74 | 0.53 |
| *STAI | 31.66 ± 7.21 | 29.77 ± 7.12 | 29.5 ± 4.4 | 34.87 ± 10.98 | 0.83 | 0.48 |
| **ASRS | 17.22 ± 4.73 | 22.66 ± 7.88 | 22.11 ± 9.38 | 24.85 ± 7.96 | 1.46 | 0.24 |
*STAI: Scale for anxiety (state); **ASRS: Scale for ADHD.