Table 1.
Participant characteristics
| Group | Test of Group Differences | ||
|---|---|---|---|
| FXS n = 51 | TD n = 35 | p-value | |
| Chronological Age (years) | .001 | ||
| M (SD) | 10.2 (1.7) | 5.1 (0.8) | |
| Range | 7.9–13.2 | 3.3–7.4 | |
| Nonverbal Mental Age1 (years) | .628 | ||
| M (SD) | 5.4 (0.6) | 5.2 (0.8) | |
| Range | 4.1–6.7 | 3.7–7.5 | |
| IQ2 | .001 | ||
| M (SD) | 56.0 (10.47) | 107.7 (8.77) | |
| Range | 36.0-74.0 | 85.0-123.0 | |
| CARS | n/a | ||
| M (SD) | 27.5 (4.5) | -- | |
| Range | 17.5–37.5 | ||
| Ethnicity [% (n)] | .723 | ||
| European American | 82.3 (42) | 88.5 (31) | |
| African American | 13.7 (7) | 8.6 (3) | |
| Hispanic | 2.0 (1) | 2.9 (1) | |
| Asian American | 2.0 (1) | -- | |
| Maternal Education [% (n)] | .003 | ||
| High school or less | 20.0 (39.2) | 4.0 (11.4) | |
| Some college | 18.0 (35.3) | 11.0 (31.4) | |
| College degree or higher | 11.0 (21.6) | 20.0 (57.2) | |
| Not reported | 2.0 (3.9) | -- | |
Note.
1
Brief IQ Age equivalent on the Leiter International Performance Scale-Revised
2
Brief IQ Standard Score on the Leiter International Performance Scale-Revised
CARS = Childhood Autism Rating Scale