Table 2.
Participant Characteristics by Group and Gender
| DS |
FXS |
TD |
||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Females | Males | Females | Males | Females | Males | |||||||
| (n = 10) | (n = 18) | (n = 5) | (n = 30) | (n = 9) | (n = 14) | |||||||
|
|
||||||||||||
| Characteristic | Mean | SD | Mean | SD | Mean | SD | Mean | SD | Mean | SD | Mean | SD |
| Chronological age | 12.7 | 1.4 | 12.9 | 1.9 | 11.0 | 1.0 | 12.8 | 1.8 | 4.7 | 0.5 | 4.6 | 1.1 |
| Nonverbal IQa | 45.0 | 8.6 | 41.8 | 5.9 | 54.6 | 7.7 | 42.5 | 5.9 | 110.3 | 7.7 | 107.4 | 12.6 |
| Leiter-R growth score | 465.1 | 7.1 | 460.6 | 7.3 | 468.6 | 4.5 | 462.5 | 7.2 | 463.9 | 9.9 | 461.7 | 9.8 |
| Leiter-R age-equivalent | 5.3 | 0.7 | 4.7 | 0.7 | 5.6 | 0.5 | 4.9 | 0.7 | 5.1 | 0.4 | 4.8 | 1.0 |
a
One participant with DS completed only three out of four subtests of the Leiter-R Brief IQ subtests; therefore, scores from the three subtests were averaged to obtain estimated scores.