Means and standard deviations for the demographic variables
| Variable | Group; mean (and SD) | df | t | p | |
|---|---|---|---|---|---|
| Typical (n = 22) | Autism (n = 22) | ||||
| Age, y | 9.35 (1.75) | 8.81 (1.90) | 42 | 0.98 | 0.33 |
| IQ* | 113.64 (15.47) | 87.67 (12.08) | 41 | 6.11 | <0.01 |
IQ = intelligence quotient; SD = standard deviation.
↵* IQ derived from the Wechsler Abbreviated Intelligence Scale19 or Wechsler Intelligence Scale for Children-Fourth Edition.16