Table 1.
Participants’ Characteristics
| Non-psychopaths (n=72) | Psychopaths (n=20) | p | |
|---|---|---|---|
| Age | 26.64 (6.31) | 26.00 (4.89) | .68 |
| Years of Education | 11.04 (1.76) | 11.20 (2.24) | .74 |
| Estimated IQ | 102.95 (12.66) | 110.60 (12.89) | .09 |
| BDI-II | 11.76 (7.72) | 10.70 (5.57) | .57 |
| STAI-State | 38.08 (9.53) | 37.85 (9.85) | .92 |
| STAI-Trait | 40.68 (9.73) | 43.65 (10.27) | .24 |
| Days since last used heroin (Medians, Inter Quartile Range) | 165 (401) | 150 (289) | .43 |
| Years of heroin use | 4.25 (2.15) | 4.23 (1.79) | .98 |
| Past alcohol dependence (%) | 1 (1.4%) | 0 | |
| Past cannabis dependence (%) | 0 | 2 (10%) | |
| Past stimulant dependence (%) | 0 | 0 | |
| Past cocaine dependence (%) | 0 | 0 |
Note: Unless otherwise noted, data are presented as means and standard deviations
BDI-II: Beck Depression Inventory, 2nd Edition; STAI: State-Trait Anxiety Inventory