Table 1.
Participant demographics: Individuals with ASC and neurotypicals
| Characteristics |
ASC (n = 67); mean (SD) [range] |
NT (n = 69); mean (SD) [range] |
Statistics |
|---|---|---|---|
| LD | 41 no LD; 26 LD; | —; | —; |
| Agea | 26.19 (6.79) [18–43] | 27.88 (5.99) [18–43] | ns |
| Full scale IQa | 109.28 (14.61) [73–135] | 113.93 (12.85) [77–137] | ns |
| Verbal IQa | 108.67 (14.43) [77–139] | 108.77 (13.3) [71–137] | ns |
| Performance IQb | 107.6 (16.03) [73–138] | 116.61 (12.32) [76–135] | NT>ASC |
| ADI‐Rc | 38.99 (10.0) [21–62] | — | — |
| Social | 17.69 (5.4) [9–28] | — | — |
| Communication | 13.78 (4.2) [8–24] | — | — |
| RSB | 4.9 (2.23) [2–10] | — | — |
| ADOSd | 11.43 (5.66) [0–24] | — | — |
| Communication | 3.23 (1.76) [0–7] | — | — |
| Social | 6.03 (3.19) [1–14] | — | — |
| RSB | 1.36 (1.47) [0–6] | — | — |
Abbreviations: ASC: autism spectrum condition; ADI‐R: autism diagnostic interview–revised; ADOS: autism diagnostic observation schedule; LD: language delay; NT: neurotypicals; RSB: repetitive and stereotyped behaviour.
There were no significant differences between the ASC and control groups in age, full‐scale IQ, or verbal IQ (P > 0.05).
The two groups significantly differed in performance IQ (P = 0.01).
Information was available for all 67 individuals with ASC. The following cut‐off scores were used: ADI‐R Social, >10; Communication, >8; and RSB, >3.
Information was available for 66 individuals with ASC, using a cut‐off score of 7.