Table 1 A comparison of one-time firesetters (n = 88) to fire-setting recidivists (n = 41) with normal IQ
From: Psychopathic traits among a consecutive sample of Finnish pretrial fire-setting offenders
| Â | One-time firesetters | Fire-setting recidivists | Statistics 1 | p | Effect size |
|---|---|---|---|---|---|
Age mean (SD) | 32.0 (11.20) | 33.5 (11.40) | t = 0.695 | NS | d = −0.133 |
Number of fire-settings mean (SD) | 1 | 3.5 (3.04) | t = −5.287 | <0.001 | d = −1.163 |
Principal clinical diagnoses | Â | Â | Â | Â | Â |
Personality disorders | 53/88 | 23/41 | χ2 = 0.063 | NS | φ = 0.022 (max = 0.817) |
Psychoses | 20/88 | 10/41 | χ2 = 0.043 | NS | φ = 0.018 (max = 0.376) |
Other | 15/88 | 8/41 | χ2 = 0.009 | NS | φ = 0.008 (max = 0.318) |
PCL-R total score mean (SD) | 15.8 (6.8) | 16.6 (7.1) | Z = −0.504 | NS | ϴ = 0.472 |
PCL-R total score ≥ 30 | 1/88 | 1/41 | # | NS | NA |
PCL-R total score ≥ 25 | 11/88 | 8/41 | χ2 = 1.095 | NS | φ = 0.092 (max = 0.284) |
PCL-R factor 1 mean (SD) | 5.1 (3.59) | 4.8 (3.01) | Z = −0.089 | NS | ϴ = 0.495 |
PCL-R factor 2 mean (SD) | 9.7 (3.89) | 10.3 (3.80) | Z = −0.840 | NS | ϴ = 0.454 |
Item mean (SD) | Â | Â | Â | Â | Â |
1. Glibness/superficial charm | 0.23 (0.45) | 0.29 (0.60) | Z = −0.215 | NS | ϴ = 0.492 |
2. Grandiose sense of self worth | 0.45 (0.61) | 0.29 (0.56) | Z = −1.619 | NS | ϴ = 0.426 |
3. Need for stimulation | 1.16 (0.79) | 1.17 (0.77) | Z = −0.038 | NS | ϴ = 0.498 |
4. Pathological lying | 0.11 (0.41) | 0.07 (0.35) | Z = −0.630 | NS | ϴ = 0.485 |
5. Conning/manipulative | 0.51 (0.82) | 0.29 80.68) | Z = −1.581 | NS | ϴ = 0.433 |
6. Lack of remorse or guilt | 0.92 (0.75) | 1.06 (0.84) | Z = −0.878 | NS | ϴ = 0.412 |
7. Shallow affect | 0.72 (1.73) | 0.93 (0.82) | Z = −1.369 | NS | ϴ = 0.430 |
8. Callous/ lack of empathy | 0.80 (0.77) | 0.84 (0.72) | Z = −0.368 | NS | ϴ = 0.481 |
9. Parasitic lifestyle | 0.75 (0.79) | 0.71 (0.68) | Z = −0.276 | NS | ϴ = 0.486 |
10. Poor behavioral controls | 1.59 (0.66) | 1.66 (0.58) | Z = −0.411 | NS | ϴ = 0.482 |
11. Promiscuous sexual behavior | 0.28 (0.56) | 0.36 (0.74) | Z = −0.107 | NS | ϴ = 0.496 |
12. Early behavior problems | 0.80 (0.89) | 0.98 (0.88) | Z = −1.071 | NS | ϴ = 0.469 |
13. Lack of realistic goals | 1.24 (0.76) | 1.39 (0.77) | Z = −1.159 | NS | ϴ = 0.442 |
14. Impulsivity | 1.65 (0.55) | 1.76 (0.49) | Z = −1.140 | NS | ϴ = 0.451 |
15. Irresponsibility | 1.75 (0.49) | 1.61 (0.63) | Z = −1.191 | NS | ϴ = 0.450 |
16. Failure to accept responsibility | 1.24 (0.70) | 1.20 (0.68) | Z = −0.425 | NS | ϴ = 0.479 |
17. Many short-term marital relationships | 0.07 (0.33) | 0.10 (0.30) | Z = −1.089 | NS | ϴ = 0.475 |
18. Juvenile delinquency | 0.48 (0.84) | 0.57 (0.90) | Z = −0.596 | NS | ϴ = 0.471 |
19. Revocation of conditional release | 0.28 (0.69) | 0.34 (0.76) | Z = −0.363 | NS | ϴ = 0.488 |
20. Criminal versatility | 1.00 (0.94) | 1.02 (0.99) | Z = −0.140 | NS | ϴ = 0.493 |