Table 1.
Standardized IQ, math and reading achievement and working memory scores for children in the DD and TD groups.
| Measure | Group | p | |||
|---|---|---|---|---|---|
| DD (N = 17) | TD (N = 17) | ||||
| M | SD | M | SD | ||
| Males/females | 6/11 | 6/11 | |||
| Age (months) | 98.05 | 6.72 | 97.41 | 6.59 | .80 |
| WASI | |||||
| Verbal | 106.64 | 12.32 | 112.41 | 16.48 | .26 |
| Performance | 107.58 | 18.2 | 113.23 | 12.76 | .30 |
| Full Scale | 107.7 | 13.36 | 114.58 | 10.73 | .11 |
| WIAT-II | |||||
| Word Reading | 108.47 | 9.23 | 113.29 | 10.65 | .17 |
| Numerical Operations | 85.7 | 3.49 | 115.94 | 15.53 | <.01 |
| Mathematical Reasoning | 102.47 | 14.82 | 115.29 | 12.76 | .01 |
| WMTB-C | |||||
| Backward Digit Recall | 100.17 | 21.1 | 99.1 | 15.89 | .87 |
| Digit Recall | 109.23 | 21.32 | 112.41 | 15.98 | .66 |
| Block Recall | 92.41 | 17.69 | 103.88 | 8.65 | .02 |
| Counting Recall | 93.05 | 18.67 | 97.52 | 20.39 | .51 |
WASI = Wechsler Abbreviated Scales of Intelligence; WIAT-II = Wechsler Individual Achievement Test – Second Edition; WMTB-C = Working Memory Test Battery for Children.