Table 1.
Group characteristics
| ASD group | ASD control group | ASD parent group | Parent control group | |
|---|---|---|---|---|
| M (SD) | M (SD) | M (SD) | M (SD) | |
| Range | Range | Range | Range | |
| Males:females | 45:10a | 19:20 | 38:58 | 20:28 |
| Chronological age | 16.57 (6.62) | 18.99 (5.21) | 46.67 (7.67)* | 43.00 (9.87) |
| 6.45–35.10 | 12.38–32.03 | 28.38–65.76 | 25.95–63.89 | |
| Full-scale IQ | 104.22 (12.03)* | 115.45 (12.03) | 111.09 (11.41) | 114.81 (11.36) |
| 83.00–131.00 | 89.00–142.00 | 85.00–136.00 | 85.67–136.00 | |
| Verbal IQ | 105.10 (13.79)* | 117.50 (11.36) | 109.41 (12.23)* | 111.20 (12.85) |
| 82.00–146.00 | 93.00–142.00 | 80.00–132.00 | 82.00–138.00 | |
| Performance IQ | 102.88 (14.58)* | 111.08 (14.19) | 110.40 (11.10) | 115.08 (12.93) |
| 68.00–131.00 | 79.00–143.00 | 83.00–133.00 | 86.00–148.00 |
Significant differences (p < .05) between the ASD Group or ASD Parent Group and their respective control groups are indicated with *
ASD Autism Spectrum Disorder, M Mean, SD standard deviation
aSex distribution in the ASD Group largely reflects sex bias noted in the prevalence of ASD (Werling and Geschwind 2013; Fombonne 2009; Idring et al. 2015)