Table 3.
Neuropsychological test performance
| Assessment Time 1 | Assessment Time 2 | |||||||
|---|---|---|---|---|---|---|---|---|
| Mean1 | SD1 | Range1 | Mean2 | SD2 | Range2 | Mean1– Mean2 Diff. |
Test–retest Reliability (ICC) |
|
| Age (years) | 12.0 | 3.7 | 6–18 | 12.5 | 3.7 | 6.7–19 | .5 | n/a |
| Comparison tests | ||||||||
| PPVT-III (n = 39) | 102.6 | 16.8 | 72–150 | 104.7 | 18.0 | 70–154 | 2.1 | .92 |
| WISC-IV: Block Design (n = 31) | 9.4 | 3.3 | 4–17 | 9.8 | 3.8 | 3–17 | .4 | .87 |
| Beery Test of Visual Perceptual (n = 39) |
100.3 | 20.6 | 59–139 | 99.0 | 18.2 | 58–145 | −1.3 | .82 |
| Conners CPT-II (T-scores) (n = 37) | ||||||||
| Errors of Omission | 51.8 | 10.8 | 41–93 | 53.0 | 10.6 | 41–74 | 1.2 | .39 |
| Errors of Commission | 46.7 | 10.8 | 11–62 | 48.3 | 9.8 | 32–65 | 1.6 | .57 |
| Variability | 53.7 | 9.1 | 37–74 | 53.0 | 12.0 | 29–81 | −.7 | .48 |
| Hit Reaction Time | 52.3 | 12.1 | 33–85 | 51.4 | 12.3 | 33–77 | −.9 | .65 |
| Attentiveness | 48.9 | 9.8 | 16–66 | 48.3 | 11.9 | 12–69 | −.6 | .33 |
SD = standard deviation, CPT-II = Continuous Performance Test – Second edition; PPVT-III = Peabody Picture Vocabulary Test – Third edition; WISC-IV = Wechsler Intelligence Scale for Children – Fourth edition; ICC = Intraclass correlation.