Compared to individuals of the same gender in the population, the mean percentile rank of drinking norms was 97.5 (sd = 3.26). Based on data from the Form- 90 regarding typical weekly drinking patterns and levels of intoxication, the subjects in the feedback session had a reported mean Blood Alcohol Concentration (BAC) level of .13 (sd =.13) in a typical week, with a mean typical heavy day of drinking reaching a BAC of .23 (sd = .30). Subjects received feedback on the common effects of different levels of intoxication and how their self-reported drinking compared.