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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).

From: Psychopathic traits and offender characteristics – a nationwide consecutive sample of homicidal male adolescents

 

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

  1. Likelihood ratio Chi-square-test or Mann-Whitney U-test used to compare the groups.