During the first session, alcohol use history was assessed using the timeline follow-back methodology of the Lifetime Drinking History questionnaire (Skinner and Allen, 1982; Sobell and Sobell, 1990). Alcohol use variables for lifetime use and peak use phases were recorded with this methodology. The density of a family history of alcohol problems was assessed using the family history drinking questionnaire (Mann et al., 1985). The family history density (FHD) measure was the proportion of first-degree relatives who had alcohol problems. Although corroboration of these measures from relatives was not sought, the FHD measure has been shown to have high test–retest reliability and overall accuracy (Stoltenberg et al., 1998; Vogel-Sprott et al., 1985). Psychiatric diagnoses were assessed using the computerized Diagnostic Interview Schedule (c-DIS) (Robins et al., 1998). Participants were examined for a total of 6 anxiety disorders (social phobia, agoraphobia, panic disorder, PTSD, obsessive disorder, and compulsive disorder), 3 mood disorders (depression, dysthymia, and mania), and 2 externalizing disorders (conduct disorder and antisocial personality disorder). Lifetime symptom counts for all positive symptoms were obtained for each disorder, using the DSM-IV
