Table II.
Comparisons of sociodemographic and clinical characteristics of the offenders with high and those with medium psychopathy
| High psychopathy (N = 12) | Medium psychopathy (N = 14) | P‐value | |
|---|---|---|---|
| Mean age (in years) | 33.0 ± 8.6 | 32.1 ± 8.5 | 0.800 |
| Duration of alcohol abuse (in years) | 19.6 ± 10.0 | 18.3 ± 8.9 | 0.725 |
| Amphetamine use | 75% | 43% | 0.130 |
| Polysubstance abuse | 100% | 57% | 0.017 |
| Mean global IQ score | 94.7 ± 8.6 | 88.7 ± 8.8 | 0.095 |
| Current psychotropic medication | 67% | 50% | 0.453 |
| Mean score PCL‐R total | 34.6 ± 3.1 | 25.9 ± 2.8 | <0.001 |
| Hare's Factor 1 | 14.0 ± 2.1 | 8.1 ± 1.5 | <0.001 |
| Hare's Factor 2 | 17.2 ± 1.8 | 16.0 ± 1.6 | 0.062 |
| Cooke's Factor 1 | 6.03 ± 1.74 | 1.90 ± 1.12 | <0.001 |
| Cooke's Factor 2 | 7.83 ± 0.58 | 6.14 ± 1.10 | <0.001 |
| Cooke's Factor 3 | 9.67 ± 1.15 | 9.71 ± 0.47 | 0.889 |
Values denote mean ± SD or percent proportions. P values refer to Student's t and Fisher's exact tests. The IQ of the offenders was assessed using the Wechsler Adult Intelligence Scale—Revised [Wechsler,1981]. Hare's Factor 1 is “Arrogant Deceitful Interpersonal Conduct and Deficient Affective Experience”, and Hare's Factor 2 “Impulsive, Irresponsible Behavioral Style”. Cooke's Factor 1 is “Arrogant and deceitful interpersonal style”, Cooke's Factor 2 “Deficient affective experience” and Cooke's Factor 3 “Impulsive, irresponsible behavioral style” [Cooke and Michie, 2001].