Participants reported their average number of drinking occasions per week and average number of drinks consumed per occasion in the past 3 months (scored on a per week basis), using items adapted from the NIAAA Task Force recommendations (NIAAA, 2003). An alcohol quantity-frequency variable (AlcQF) was created by multiplying the number of typical weekly drinking occasions by number of drinks typically consumed per occasion. Participants indicated their experience of various alcohol-related negative consequences using the 24-item Young Adult Alcohol Problems Screening Test (see Hurlbut & Sher, 1992). Nine of these items specifically query features of AUD (e.g., withdrawal; continued use despite problems). Participants indicated whether they had experienced each consequence “Never,” “Yes, but not in the past year,” “In the past year but not the past 3 months,” “Yes, in the past 3 months: once; twice; 3 times; 4 or more times” (scored 0, .3, .5, 1, 2, 3, and 5, respectively). An overall “negative consequences” score was calculated as the sum of responses to all 24 items (α = .86); a separate “AUD” score was calculated as the sum of responses to the nine dependence-related items (α = .75).
