The final sample of study completers consisted of forty (12 female) non-treatment seeking heavy drinkers with an average age of 22 (SD = 2.18; Range 21 to 32). The majority of the sample was White (n = 34) with a few participants of Asian (n = 4) and Latino (n = 2) background. The average self-reported number of drinks per occasion in the last year was 4.84 (SD = 2.25), and AUDIT scores reflected, on average, hazardous levels of alcohol use (M = 12.41, SD = 4.23). The study was approved by the University of Colorado Human Research Committee and all participants provided written informed consent after receiving a full explanation of the study.