Table 1.
Participant characteristics
| Mean (SD) or % |
||
|---|---|---|
| Males (n = 24) | Females (n = 25) | |
| Years of age (range: 12 to 17) | 15.06 (1.72) | 14.49 (1.73) |
| Caucasian | 75% | 80% |
| Annual household income (thousands) | 87.13 (37.31) | 91.67 (51.72) |
| Grade point average | 3.46 (0.51) | 3.66 (0.44) |
| Number of grades completed | 8.39 (1.64) | 7.80 (1.53) |
| Vocabulary (T-score)a | 57.71 (7.33) | 57.80 (9.12) |
| Digit Span (T-score)a | 49.80 (8.28) | 51.08 (9.69) |
| Block Design (T-score)a | 56.92 (8.65) | 55.25 (9.19) |
a
Subtest from the Wechsler Intelligence Scale for Children—Third Edition (Wechsler, 1993) and the Wechsler Abbreviated Scale of Intelligence (Wechsler, 1999) for those under age 17, or from the Wechsler Adult Intelligence Scale—Third Edition (Wechsler, 1997) for 17-year-olds.