Table 1.
Demographic information
| Demographic variables | Typically developing (N = 16) | CP/HCU (N = 16) | ASD (N = 16) | p-value | Difference |
|---|---|---|---|---|---|
| Age (years) | 13.51 (1.65) | 14.15 (1.88) | 14.18 (1.63) | .47 | |
| Socioeconomic status | 2.70 (0.85) | 3.19 (1.07) | 2.69 (0.95) | .26 | |
| Full-scale IQ | 106.69 (12.67) | 98.13 (11.98) | 107.31 (13.23) | .08 | |
| Verbal T score | 56.94 (10.52) | 49.13 (8.74) | 55.25 (8.70) | .06 | |
| Matrix reasoning T score | 50.13 (8.61) | 48.38 (9.27) | 52.88 (9.94) | .39 | |
| Race/ ethnicity (N) | |||||
| White | 14 | 13 | 14 | ||
| Black | 1 | 1 | 1 | ||
| Mixed race | 1 | 2 | 1 | .83 | |
| Handedness (N) | |||||
| Right | 11 | 14 | 15 | ||
| Left | 4 | 2 | 1 | ||
| Ambidextrous | 1 | 0 | 0 | .14 | |
| Inventory of Callous Unemotional traits (parent rated) | 16.87 (5.72) | 46.46 (7.02) | 27.24 (8.99) | <.001 | TD<ASD<CP/HCU |
| Child and Adolescent Symptom Inventory (parent rated) | |||||
| Conduct disorder symptoms | 0.61 (0.85) | 10.29 (5.45) | 1.25 (1.39) | <.001 | TD=ASD<CP/HCU |
| ADHD symptoms | 9.88 (6.20 | 31.25 (9.09) | 23.50 (9.91) | <.001 | TD<ASD<CP/HCU |
| Generalised anxiety symptoms | 3.75 (3.19) | 8.13 (5.17) | 9.38 (3.72) | .001 | TD<ASD=CP/HCU |
| Major depressive symptoms | 2.75 (1.98) | 5.47 (3.34) | 6.75 (4.48) | .006 | TD<ASD=CP/HCU |
| Autism spectrum symptoms | 1.40 (2.35) | 4.27 (3.99) | 13.88 (7.07) | <.001 | TD<CP/HCU<ASD |
| Alcohol use and disorders | 1.19 (1.76) | 4.75 (7.26) | 0.33 (0.62) | .02 | ASD<TD=CP/HCU |
| Drug use and disorders | 0.00 (0.00) | 1.06 (2.62) | 0.13 (0.50) | .11 | |