Table 3.
Cognitive Function Group Means and SDs
| Test | Group 1 (n = 90) | Group 2 (n = 431) | Group 3 (n = 348) | Group 4 (n = 141) |
|---|---|---|---|---|
| DAS | ||||
| Verbal | 99.45 (14.20) | 98.75 (15.08) | 98.02 (15.30) | 92.40 (12.49) |
| Nonverbal | 103.26 (15.10) | 99.35 (14.23) | 99.70 (14.65) | 95.63 (12.88) |
| Global | 102.05 (13.66) | 99.71 (13.62) | 98.79 (14.24) | 93.91 (11.93) |
| NEPSY | ||||
| Design Copying | 10.83 (3.22) | 10.12 (3.00) | 9.78 (3.13) | 9.14 (3.36) |
| Phonological Processing | 10.08 (3.34) | 9.67 (3.79) | 9.49 (3.75) | 8.66 (3.88) |
| Tower | 11.20 (2.88) | 11.32 (3.22) | 10.91 (3.34) | 9.77 (3.24) |
| Speed Naming | 9.85 (3.05) | 9.19 (3.33) | 9.04 (3.25) | 8.67 (3.20) |
| Arrows | 11.76 (3.02) | 10.48 (2.96) | 10.35 (2.87) | 9.47 (2.61) |
| Visual Attention | 10.69 (2.62) | 10.76 (3.00) | 10.14 (3.17) | 9.80 (3.35) |
| Comprehension | 10.69 (2.59) | 10.38 (2.98) | 10.03 (2.84) | 9.19 (3.05) |
| PPVT | 101.40 (18.58) | 99.08 (14.47) | 98.47 (14.78) | 96.44 (14.87) |
| EVT | 98.88 (14.78) | 98.33 (12.63) | 96.25 (13.01) | 94.01 (13.08) |
Definition of abbreviations: DAS = Differential Ability Scales; EVT = Expressive Vocabulary Test; NEPSY = a Developmental Neuropsychological Assessment; PPVT = Peabody Picture Vocabulary Test.