Table 1.
Participant Characteristics
| Autism group (n = 13; all males)
|
Comparison group (n = 12; 9 males)
|
|||||
|---|---|---|---|---|---|---|
| Variable | M | SD | Min.-max. | M | SD | Min.-max. |
| Age (years) | 10.3 | 2.4 | 7.3–15.2 | 10.3 | 3.1 | 7.3–16.8 |
| FSIQ | 92.31 | 17.13 | 72–118 | 109.80a | 18.14a | 78–122a |
| WISC IV only | ||||||
| WMIQ | 92.13b | 16.87b | 56–107b | |||
| VCIQ | 100.13b | 27.34b | 61–142b | |||
| PRI | 116.13b | 19.48b | 79–141b | |||
| PSI | 91.88b | 12.91b | 78–112b | |||
| ADOS (Mod 3) | ||||||
| Comm. | 4.3c | 2.17c | 1–8c | |||
| RSI | 8.69c | 2.25c | 4–13c | |||
| Comm.+ RSI | 12.92c | 3.81c | 8–21c | |||
| SB/RI | 2.54c | 2.22c | 0–7c | |||
| Total | 15.46c | 5.06c | 8.25c | |||
| ADI-R | ||||||
| A | 21.62 | 5.39 | 13–28 | |||
| B | 17 | 3.97 | 10–23 | |||
| C | 6.92 | 2.50 | 3–11 | |||
| D | 4.08 | .95 | 3–5 | |||
Note. FSIQ = Full scale intelligence quotient; WISC; Wechsler Intelligence Scale for Children, Version 4 (Wechsler, 2004); WMIQ = working memory IQ; VCIQ = verbal comprehension IQ; PRI = perceptual reasoning IQ; PSI = processing speed index; ADOS = Autism Diagnostic Observation Schedule (Lord et al., 2000); Mod = module; Comm = communication; RSI = reciprocal social interaction; SB/RI = stereotyped behavior/restricted interests; Total = (Comm. + RSI) + (SB/RI); ADI-R: = Autism Diagnostic Interview—Revised (Lord, Rutter, & LeCouteur, 1994); A = language and communication; B = social interaction; C = repetitive behaviors; D = onset of symptoms before 36 months.
n = 3.
n = 8.
n = 11 values denote the number of participants for whom scores were available (see text for details).