nicotine Use, n (%)314.29%1260%9⁎Cannabis use, n (%)2b9.52%2b10%1.06Cocaine use, n (%)1b4.76%00%0Psychological measuresMMPI psychopathic deviance scale6.578.244.659.4831.9⁎⁎⁎Eysenck impulsivity scale3.382.789.054.5837.3⁎⁎⁎CPI socialization scale22.243.8317.104.2829.7⁎⁎⁎ASPD lifetime symptoms3.003.077.604.8225.6⁎⁎ASPD current symptoms0.670.971.251.804.2⁎p < 0.05.⁎⁎p < 0.001.⁎⁎⁎p < 0.0001.aStatistical comparisons are inappropriate since the variable is related to selection criteria.bRecreational substance use only, no subjects met criteria for abuse or dependence; subjects had been abstinent from these substances for an average of 18 years at the time of assessments.
