Table 1.
PCL-R mean (SD) total scores, factor scores, facet scores, and item-by-item scores of the homicidal male adolescents (n = 57) and the adult male comparison group (n = 57).
| Adolescents | Comparisons | Statistics | p | Phi | |
| PCL-R total score | 18.1 (8.73) | 20.2 (10.79) | -1.083 | 0.279 | -0.10 |
| PCL-R total score ≥ 26 n (%) | 12/57 (21) | 21/57 (37) | 3.455 | 0.063 | -0.17 |
| PCL-R total score > 30 n (%) | 7/57 (12) | 17/57 (30) | 5.278 | 0.022 | -0.22 |
| PCL-R factor 1 Interpersonal/Affective | 5.5 (3.55) | 8.3 (4.88) | -3.090 | 0.002 | -0.29 |
| PCL-R factor 2 Social Deviance |
11.4 (5.50) | 10.5 (6.08) | -0.675 | 0.500 | -0.06 |
| PCL-R facet 1 Interpersonal |
1.29 (1.70) | 2.80 (2.76) | -3.115 | 0.002 | -0.30 |
| PCL-R facet 2 Affective |
4.52 (2.80) | 5.50 (2.66) | -2.475 | 0.013 | -0.23 |
| PCL-R facet 3 Lifestyle |
6.48 (3.48) | 6.05 (3.50) | -0.824 | 0.410 | -0.07 |
| PCL-R facet 4 Antisocial |
5.16 (2.68) | 4.78 (3.13) | -0.811 | 0.417 | -0.08 |
| 1. Glibness/superficial charm | 0.3 (0.43) | 0.5 (0.76) | -1.143 | 0.253 | -0.11 |
| 2. Grandiose sense of self-worth | 0.4 (0.65) | 0.8 (0.86) | -2.472 | 0.013 | -0.23 |
| 3. Need for stimulation | 1.3 (0.81) | 1.3 (0.81) | -0.638 | 0.524 | -0.05 |
| 4. Pathological lying | 0.1 (0.47) | 0.6 (0.83) | -4.019 | 0.000 | -0.38 |
| 5. Conning/manipulative | 0.5 (0.74) | 0.8 (0.88) | -2.060 | 0.039 | -0.20 |
| 6. Lack of remorse or guilt | 1.2 (0.81) | 1.3 (0.87) | 0.830 | 0.407 | -0.08 |
| 7. Shallow affect | 0.7 (0.76) | 1.5 (0.63) | -5.566 | 0.000 | -0.52 |
| 8. Callous/lack of empathy | 1.3 (1.49) | 1.4 (0.78) | -1.614 | 0.107 | -0.15 |
| 9. Parasitic lifestyle | 0.9 (0.84) | 0.9 (0.81) | -0.216 | 0.829 | -0.02 |
| 10. Poor behavioral controls | 1.3 (0.76) | 1.5 (0.71) | -1.779 | 0.075 | -0.17 |
| 11. Promiscuous sexual behaviour | 0.3 (0.63) | 0.4 (0.67) | -0.696 | 0.487 | -0.07 |
| 12. Early behavioral problems | 0.8 (0.88) | 0.7 (0.82) | -0.831 | 0.406 | -0.08 |
| 13. Lack of realistic goals | 1.3 (0.86) | 1.2 (0.82) | -0.434 | 0.664 | -0.04 |
| 14. Impulsivity | 1.7 (0.55) | 1.4 (0.78) | -1.224 | 0.221 | -0.11 |
| 15. Irresponsibility | 1.3 (0.83) | 1.3 (0.85) | -0.487 | 0.626 | -0.05 |
| 16. Failure to accept responsibility | 1.4 (1.48) | 1.3 (0.82) | -0.869 | 0.385 | 0.08 |
| 17. Many short-term marital relationships | 0.3 (0.64) | ||||
| 18. Juvenile delinquency | 1.6 (0.76) | 0.7 (0.92) | -4.803 | 0.000 | -0.46 |
| 19. Revocation of conditional release | 0.8 (0.98) | 0.8 (0.97) | -0.140 | 0.889 | -0.02 |
| 20. Criminal versatility | 0.7 (0.83) | 1.0 (0.85) | -1.999 | 0.046 | -0.10 |
Likelihood ratio Chi-square-test or Mann-Whitney U-test used to compare the groups.