Table 1.
Group characteristics and behavioral scores of adult and child participants of Studies 2 and 3 (fMRI).
| Adults (n = 27;14♂) |
Children (n = 33;18♂) |
||||
|---|---|---|---|---|---|
| Mean | SD | Mean | SD | ||
| Age | 25.41 | 4.16 | 9.06 | 2.11 | |
| ISCED | 4.22 | 0.97 | n.a. | n.a. | |
| IQ | WISC-IV (verbal) | n.a. | n.a. | 113.18 | 17.18 |
| WISC-IV (matrices) | n.a. | n.a. | 110.45 | 13.83 | |
| IRI | Empathic Concern | 18.56 | 4.04 | n.a. | n.a. |
| Fantasy | 16.37 | 5.06 | n.a. | n.a. | |
| Personal Distress | 10.96 | 4.03 | n.a. | n.a. | |
| Perspective Taking | 18.93 | 3.10 | n.a. | n.a. | |
| Total | 64.81 | 8.91 | n.a. | n.a. | |
| YPI | Callous-Unemotional | 9.22 | 1.76 | n.a. | n.a. |
| Grandiose-Manipulative | 8.67 | 1.95 | n.a. | n.a. | |
| Impulsive-Irresponsible | 9.99 | 2.14 | n.a. | n.a. | |
| Total | 9.29 | 1.48 | n.a. | n.a. | |
Notes. ISCED = International Standard Classification of Education, IRI = Interpersonal Reactivity Index (sum scores), YPI = Youth Psychopathic Traits Inventory (mean scores), WISC-IV = Wechsler Intelligence Scale for Children, Fourth Edition, SD = standard deviation, n.a. = not applicable.