Demographic information is presented in Table 1. There were no significant differences between the genotype groups on demographic variables (ps > 0.10). Alcohol use was assessed using the 30-day timeline follow-back (TLFB; Sobell and Sobell, 1980). Alcohol dependence and the exclusionary diagnoses were assessed using the Structured Clinical Interview for DSM-IV (SCID; First et al., 1995). All participants completed the Clinical Institute Withdrawal Assessment for Alcohol (CIWA-Ar; Sullivan et al., 1989), Alcohol Dependence Scale (ADS; Skinner and Allen, 1982), Drinkers Inventory of Consequences (DrInC-2R) questionnaire (Miller et al., 1995), and the Penn Alcohol Craving Scale (PACS; Flannery et al., 1999).
